Commit | Line | Data |
---|---|---|
c4a3e0a5 | 1 | /* |
3f1530c1 | 2 | * Linux MegaRAID driver for SAS based RAID controllers |
c4a3e0a5 | 3 | * |
3f1530c1 | 4 | * Copyright (c) 2009-2011 LSI Corporation. |
c4a3e0a5 | 5 | * |
3f1530c1 | 6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
c4a3e0a5 | 10 | * |
3f1530c1 | 11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
c4a3e0a5 | 15 | * |
3f1530c1 | 16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
c4a3e0a5 | 19 | * |
3f1530c1 | 20 | * FILE: megaraid_sas_base.c |
21 | * Version : v00.00.05.29-rc1 | |
c4a3e0a5 | 22 | * |
3f1530c1 | 23 | * Authors: LSI Corporation |
24 | * Sreenivas Bagalkote | |
25 | * Sumant Patro | |
26 | * Bo Yang | |
c4a3e0a5 | 27 | * |
3f1530c1 | 28 | * Send feedback to: <megaraidlinux@lsi.com> |
29 | * | |
30 | * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 | |
31 | * ATTN: Linuxraid | |
c4a3e0a5 BS |
32 | */ |
33 | ||
34 | #include <linux/kernel.h> | |
35 | #include <linux/types.h> | |
36 | #include <linux/pci.h> | |
37 | #include <linux/list.h> | |
c4a3e0a5 BS |
38 | #include <linux/moduleparam.h> |
39 | #include <linux/module.h> | |
40 | #include <linux/spinlock.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/delay.h> | |
43 | #include <linux/uio.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
c4a3e0a5 | 45 | #include <asm/uaccess.h> |
43399236 | 46 | #include <linux/fs.h> |
c4a3e0a5 | 47 | #include <linux/compat.h> |
cf62a0a5 | 48 | #include <linux/blkdev.h> |
0b950672 | 49 | #include <linux/mutex.h> |
c3518837 | 50 | #include <linux/poll.h> |
c4a3e0a5 BS |
51 | |
52 | #include <scsi/scsi.h> | |
53 | #include <scsi/scsi_cmnd.h> | |
54 | #include <scsi/scsi_device.h> | |
55 | #include <scsi/scsi_host.h> | |
56 | #include "megaraid_sas.h" | |
57 | ||
ad84db2e | 58 | /* |
59 | * poll_mode_io:1- schedule complete completion from q cmd | |
60 | */ | |
61 | static unsigned int poll_mode_io; | |
62 | module_param_named(poll_mode_io, poll_mode_io, int, 0); | |
63 | MODULE_PARM_DESC(poll_mode_io, | |
64 | "Complete cmds from IO path, (default=0)"); | |
65 | ||
1fd10685 YB |
66 | /* |
67 | * Number of sectors per IO command | |
68 | * Will be set in megasas_init_mfi if user does not provide | |
69 | */ | |
70 | static unsigned int max_sectors; | |
71 | module_param_named(max_sectors, max_sectors, int, 0); | |
72 | MODULE_PARM_DESC(max_sectors, | |
73 | "Maximum number of sectors per IO command"); | |
74 | ||
80d9da98 | 75 | static int msix_disable; |
76 | module_param(msix_disable, int, S_IRUGO); | |
77 | MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); | |
78 | ||
c4a3e0a5 BS |
79 | MODULE_LICENSE("GPL"); |
80 | MODULE_VERSION(MEGASAS_VERSION); | |
3d6d174a | 81 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
f28cd7cf | 82 | MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); |
c4a3e0a5 | 83 | |
39a98554 | 84 | static int megasas_transition_to_ready(struct megasas_instance *instance); |
85 | static int megasas_get_pd_list(struct megasas_instance *instance); | |
86 | static int megasas_issue_init_mfi(struct megasas_instance *instance); | |
87 | static int megasas_register_aen(struct megasas_instance *instance, | |
88 | u32 seq_num, u32 class_locale_word); | |
c4a3e0a5 BS |
89 | /* |
90 | * PCI ID table for all supported controllers | |
91 | */ | |
92 | static struct pci_device_id megasas_pci_table[] = { | |
93 | ||
f3d7271c HK |
94 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, |
95 | /* xscale IOP */ | |
96 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, | |
97 | /* ppc IOP */ | |
af7a5647 | 98 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, |
99 | /* ppc IOP */ | |
6610a6b3 YB |
100 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, |
101 | /* gen2*/ | |
102 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, | |
103 | /* gen2*/ | |
87911122 YB |
104 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, |
105 | /* skinny*/ | |
106 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, | |
107 | /* skinny*/ | |
f3d7271c HK |
108 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, |
109 | /* xscale IOP, vega */ | |
110 | {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, | |
111 | /* xscale IOP */ | |
112 | {} | |
c4a3e0a5 BS |
113 | }; |
114 | ||
115 | MODULE_DEVICE_TABLE(pci, megasas_pci_table); | |
116 | ||
117 | static int megasas_mgmt_majorno; | |
118 | static struct megasas_mgmt_info megasas_mgmt_info; | |
119 | static struct fasync_struct *megasas_async_queue; | |
0b950672 | 120 | static DEFINE_MUTEX(megasas_async_queue_mutex); |
c4a3e0a5 | 121 | |
c3518837 YB |
122 | static int megasas_poll_wait_aen; |
123 | static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); | |
72c4fd36 | 124 | static u32 support_poll_for_event; |
658dcedb | 125 | static u32 megasas_dbg_lvl; |
837f5fe8 | 126 | static u32 support_device_change; |
658dcedb | 127 | |
c3518837 YB |
128 | /* define lock for aen poll */ |
129 | spinlock_t poll_aen_lock; | |
130 | ||
7343eb65 | 131 | static void |
132 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, | |
133 | u8 alt_status); | |
134 | ||
c4a3e0a5 BS |
135 | /** |
136 | * megasas_get_cmd - Get a command from the free pool | |
137 | * @instance: Adapter soft state | |
138 | * | |
139 | * Returns a free command from the pool | |
140 | */ | |
858119e1 | 141 | static struct megasas_cmd *megasas_get_cmd(struct megasas_instance |
c4a3e0a5 BS |
142 | *instance) |
143 | { | |
144 | unsigned long flags; | |
145 | struct megasas_cmd *cmd = NULL; | |
146 | ||
147 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
148 | ||
149 | if (!list_empty(&instance->cmd_pool)) { | |
150 | cmd = list_entry((&instance->cmd_pool)->next, | |
151 | struct megasas_cmd, list); | |
152 | list_del_init(&cmd->list); | |
153 | } else { | |
154 | printk(KERN_ERR "megasas: Command pool empty!\n"); | |
155 | } | |
156 | ||
157 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
158 | return cmd; | |
159 | } | |
160 | ||
161 | /** | |
162 | * megasas_return_cmd - Return a cmd to free command pool | |
163 | * @instance: Adapter soft state | |
164 | * @cmd: Command packet to be returned to free command pool | |
165 | */ | |
166 | static inline void | |
167 | megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
168 | { | |
169 | unsigned long flags; | |
170 | ||
171 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
172 | ||
173 | cmd->scmd = NULL; | |
174 | list_add_tail(&cmd->list, &instance->cmd_pool); | |
175 | ||
176 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
177 | } | |
178 | ||
1341c939 SP |
179 | |
180 | /** | |
0d49016b | 181 | * The following functions are defined for xscale |
1341c939 SP |
182 | * (deviceid : 1064R, PERC5) controllers |
183 | */ | |
184 | ||
c4a3e0a5 | 185 | /** |
1341c939 | 186 | * megasas_enable_intr_xscale - Enables interrupts |
c4a3e0a5 BS |
187 | * @regs: MFI register set |
188 | */ | |
189 | static inline void | |
1341c939 | 190 | megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) |
c4a3e0a5 | 191 | { |
39a98554 | 192 | writel(0, &(regs)->outbound_intr_mask); |
c4a3e0a5 BS |
193 | |
194 | /* Dummy readl to force pci flush */ | |
195 | readl(®s->outbound_intr_mask); | |
196 | } | |
197 | ||
b274cab7 SP |
198 | /** |
199 | * megasas_disable_intr_xscale -Disables interrupt | |
200 | * @regs: MFI register set | |
201 | */ | |
202 | static inline void | |
203 | megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) | |
204 | { | |
205 | u32 mask = 0x1f; | |
206 | writel(mask, ®s->outbound_intr_mask); | |
207 | /* Dummy readl to force pci flush */ | |
208 | readl(®s->outbound_intr_mask); | |
209 | } | |
210 | ||
1341c939 SP |
211 | /** |
212 | * megasas_read_fw_status_reg_xscale - returns the current FW status value | |
213 | * @regs: MFI register set | |
214 | */ | |
215 | static u32 | |
216 | megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) | |
217 | { | |
218 | return readl(&(regs)->outbound_msg_0); | |
219 | } | |
220 | /** | |
221 | * megasas_clear_interrupt_xscale - Check & clear interrupt | |
222 | * @regs: MFI register set | |
223 | */ | |
0d49016b | 224 | static int |
1341c939 SP |
225 | megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) |
226 | { | |
227 | u32 status; | |
39a98554 | 228 | u32 mfiStatus = 0; |
1341c939 SP |
229 | /* |
230 | * Check if it is our interrupt | |
231 | */ | |
232 | status = readl(®s->outbound_intr_status); | |
233 | ||
39a98554 | 234 | if (status & MFI_OB_INTR_STATUS_MASK) |
235 | mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; | |
236 | if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) | |
237 | mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; | |
1341c939 SP |
238 | |
239 | /* | |
240 | * Clear the interrupt by writing back the same value | |
241 | */ | |
39a98554 | 242 | if (mfiStatus) |
243 | writel(status, ®s->outbound_intr_status); | |
1341c939 | 244 | |
06f579de YB |
245 | /* Dummy readl to force pci flush */ |
246 | readl(®s->outbound_intr_status); | |
247 | ||
39a98554 | 248 | return mfiStatus; |
1341c939 SP |
249 | } |
250 | ||
251 | /** | |
252 | * megasas_fire_cmd_xscale - Sends command to the FW | |
253 | * @frame_phys_addr : Physical address of cmd | |
254 | * @frame_count : Number of frames for the command | |
255 | * @regs : MFI register set | |
256 | */ | |
0d49016b | 257 | static inline void |
0c79e681 YB |
258 | megasas_fire_cmd_xscale(struct megasas_instance *instance, |
259 | dma_addr_t frame_phys_addr, | |
260 | u32 frame_count, | |
261 | struct megasas_register_set __iomem *regs) | |
1341c939 | 262 | { |
39a98554 | 263 | unsigned long flags; |
264 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1341c939 SP |
265 | writel((frame_phys_addr >> 3)|(frame_count), |
266 | &(regs)->inbound_queue_port); | |
39a98554 | 267 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
268 | } | |
269 | ||
270 | /** | |
271 | * megasas_adp_reset_xscale - For controller reset | |
272 | * @regs: MFI register set | |
273 | */ | |
274 | static int | |
275 | megasas_adp_reset_xscale(struct megasas_instance *instance, | |
276 | struct megasas_register_set __iomem *regs) | |
277 | { | |
278 | u32 i; | |
279 | u32 pcidata; | |
280 | writel(MFI_ADP_RESET, ®s->inbound_doorbell); | |
281 | ||
282 | for (i = 0; i < 3; i++) | |
283 | msleep(1000); /* sleep for 3 secs */ | |
284 | pcidata = 0; | |
285 | pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); | |
286 | printk(KERN_NOTICE "pcidata = %x\n", pcidata); | |
287 | if (pcidata & 0x2) { | |
288 | printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); | |
289 | pcidata &= ~0x2; | |
290 | pci_write_config_dword(instance->pdev, | |
291 | MFI_1068_PCSR_OFFSET, pcidata); | |
292 | ||
293 | for (i = 0; i < 2; i++) | |
294 | msleep(1000); /* need to wait 2 secs again */ | |
295 | ||
296 | pcidata = 0; | |
297 | pci_read_config_dword(instance->pdev, | |
298 | MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); | |
299 | printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); | |
300 | if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { | |
301 | printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); | |
302 | pcidata = 0; | |
303 | pci_write_config_dword(instance->pdev, | |
304 | MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); | |
305 | } | |
306 | } | |
307 | return 0; | |
308 | } | |
309 | ||
310 | /** | |
311 | * megasas_check_reset_xscale - For controller reset check | |
312 | * @regs: MFI register set | |
313 | */ | |
314 | static int | |
315 | megasas_check_reset_xscale(struct megasas_instance *instance, | |
316 | struct megasas_register_set __iomem *regs) | |
317 | { | |
318 | u32 consumer; | |
319 | consumer = *instance->consumer; | |
320 | ||
321 | if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && | |
322 | (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) { | |
323 | return 1; | |
324 | } | |
325 | return 0; | |
1341c939 SP |
326 | } |
327 | ||
328 | static struct megasas_instance_template megasas_instance_template_xscale = { | |
329 | ||
330 | .fire_cmd = megasas_fire_cmd_xscale, | |
331 | .enable_intr = megasas_enable_intr_xscale, | |
b274cab7 | 332 | .disable_intr = megasas_disable_intr_xscale, |
1341c939 SP |
333 | .clear_intr = megasas_clear_intr_xscale, |
334 | .read_fw_status_reg = megasas_read_fw_status_reg_xscale, | |
39a98554 | 335 | .adp_reset = megasas_adp_reset_xscale, |
336 | .check_reset = megasas_check_reset_xscale, | |
1341c939 SP |
337 | }; |
338 | ||
339 | /** | |
0d49016b | 340 | * This is the end of set of functions & definitions specific |
1341c939 SP |
341 | * to xscale (deviceid : 1064R, PERC5) controllers |
342 | */ | |
343 | ||
f9876f0b | 344 | /** |
0d49016b | 345 | * The following functions are defined for ppc (deviceid : 0x60) |
f9876f0b SP |
346 | * controllers |
347 | */ | |
348 | ||
349 | /** | |
350 | * megasas_enable_intr_ppc - Enables interrupts | |
351 | * @regs: MFI register set | |
352 | */ | |
353 | static inline void | |
354 | megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) | |
355 | { | |
356 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); | |
0d49016b | 357 | |
39a98554 | 358 | writel(~0x80000000, &(regs)->outbound_intr_mask); |
f9876f0b SP |
359 | |
360 | /* Dummy readl to force pci flush */ | |
361 | readl(®s->outbound_intr_mask); | |
362 | } | |
363 | ||
b274cab7 SP |
364 | /** |
365 | * megasas_disable_intr_ppc - Disable interrupt | |
366 | * @regs: MFI register set | |
367 | */ | |
368 | static inline void | |
369 | megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) | |
370 | { | |
371 | u32 mask = 0xFFFFFFFF; | |
372 | writel(mask, ®s->outbound_intr_mask); | |
373 | /* Dummy readl to force pci flush */ | |
374 | readl(®s->outbound_intr_mask); | |
375 | } | |
376 | ||
f9876f0b SP |
377 | /** |
378 | * megasas_read_fw_status_reg_ppc - returns the current FW status value | |
379 | * @regs: MFI register set | |
380 | */ | |
381 | static u32 | |
382 | megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) | |
383 | { | |
384 | return readl(&(regs)->outbound_scratch_pad); | |
385 | } | |
386 | ||
387 | /** | |
388 | * megasas_clear_interrupt_ppc - Check & clear interrupt | |
389 | * @regs: MFI register set | |
390 | */ | |
0d49016b | 391 | static int |
f9876f0b SP |
392 | megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) |
393 | { | |
394 | u32 status; | |
395 | /* | |
396 | * Check if it is our interrupt | |
397 | */ | |
398 | status = readl(®s->outbound_intr_status); | |
399 | ||
400 | if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) { | |
39a98554 | 401 | return 0; |
f9876f0b SP |
402 | } |
403 | ||
404 | /* | |
405 | * Clear the interrupt by writing back the same value | |
406 | */ | |
407 | writel(status, ®s->outbound_doorbell_clear); | |
408 | ||
06f579de YB |
409 | /* Dummy readl to force pci flush */ |
410 | readl(®s->outbound_doorbell_clear); | |
411 | ||
39a98554 | 412 | return 1; |
f9876f0b SP |
413 | } |
414 | /** | |
415 | * megasas_fire_cmd_ppc - Sends command to the FW | |
416 | * @frame_phys_addr : Physical address of cmd | |
417 | * @frame_count : Number of frames for the command | |
418 | * @regs : MFI register set | |
419 | */ | |
0d49016b | 420 | static inline void |
0c79e681 YB |
421 | megasas_fire_cmd_ppc(struct megasas_instance *instance, |
422 | dma_addr_t frame_phys_addr, | |
423 | u32 frame_count, | |
424 | struct megasas_register_set __iomem *regs) | |
f9876f0b | 425 | { |
39a98554 | 426 | unsigned long flags; |
427 | spin_lock_irqsave(&instance->hba_lock, flags); | |
0d49016b | 428 | writel((frame_phys_addr | (frame_count<<1))|1, |
f9876f0b | 429 | &(regs)->inbound_queue_port); |
39a98554 | 430 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
f9876f0b SP |
431 | } |
432 | ||
39a98554 | 433 | /** |
434 | * megasas_adp_reset_ppc - For controller reset | |
435 | * @regs: MFI register set | |
436 | */ | |
437 | static int | |
438 | megasas_adp_reset_ppc(struct megasas_instance *instance, | |
439 | struct megasas_register_set __iomem *regs) | |
440 | { | |
441 | return 0; | |
442 | } | |
443 | ||
444 | /** | |
445 | * megasas_check_reset_ppc - For controller reset check | |
446 | * @regs: MFI register set | |
447 | */ | |
448 | static int | |
449 | megasas_check_reset_ppc(struct megasas_instance *instance, | |
450 | struct megasas_register_set __iomem *regs) | |
451 | { | |
452 | return 0; | |
453 | } | |
f9876f0b | 454 | static struct megasas_instance_template megasas_instance_template_ppc = { |
0d49016b | 455 | |
f9876f0b SP |
456 | .fire_cmd = megasas_fire_cmd_ppc, |
457 | .enable_intr = megasas_enable_intr_ppc, | |
b274cab7 | 458 | .disable_intr = megasas_disable_intr_ppc, |
f9876f0b SP |
459 | .clear_intr = megasas_clear_intr_ppc, |
460 | .read_fw_status_reg = megasas_read_fw_status_reg_ppc, | |
39a98554 | 461 | .adp_reset = megasas_adp_reset_ppc, |
462 | .check_reset = megasas_check_reset_ppc, | |
f9876f0b SP |
463 | }; |
464 | ||
87911122 YB |
465 | /** |
466 | * megasas_enable_intr_skinny - Enables interrupts | |
467 | * @regs: MFI register set | |
468 | */ | |
469 | static inline void | |
470 | megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) | |
471 | { | |
472 | writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); | |
473 | ||
474 | writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); | |
475 | ||
476 | /* Dummy readl to force pci flush */ | |
477 | readl(®s->outbound_intr_mask); | |
478 | } | |
479 | ||
480 | /** | |
481 | * megasas_disable_intr_skinny - Disables interrupt | |
482 | * @regs: MFI register set | |
483 | */ | |
484 | static inline void | |
485 | megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) | |
486 | { | |
487 | u32 mask = 0xFFFFFFFF; | |
488 | writel(mask, ®s->outbound_intr_mask); | |
489 | /* Dummy readl to force pci flush */ | |
490 | readl(®s->outbound_intr_mask); | |
491 | } | |
492 | ||
493 | /** | |
494 | * megasas_read_fw_status_reg_skinny - returns the current FW status value | |
495 | * @regs: MFI register set | |
496 | */ | |
497 | static u32 | |
498 | megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) | |
499 | { | |
500 | return readl(&(regs)->outbound_scratch_pad); | |
501 | } | |
502 | ||
503 | /** | |
504 | * megasas_clear_interrupt_skinny - Check & clear interrupt | |
505 | * @regs: MFI register set | |
506 | */ | |
507 | static int | |
508 | megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) | |
509 | { | |
510 | u32 status; | |
511 | /* | |
512 | * Check if it is our interrupt | |
513 | */ | |
514 | status = readl(®s->outbound_intr_status); | |
515 | ||
516 | if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { | |
39a98554 | 517 | return 0; |
87911122 YB |
518 | } |
519 | ||
520 | /* | |
521 | * Clear the interrupt by writing back the same value | |
522 | */ | |
523 | writel(status, ®s->outbound_intr_status); | |
524 | ||
525 | /* | |
526 | * dummy read to flush PCI | |
527 | */ | |
528 | readl(®s->outbound_intr_status); | |
529 | ||
39a98554 | 530 | return 1; |
87911122 YB |
531 | } |
532 | ||
533 | /** | |
534 | * megasas_fire_cmd_skinny - Sends command to the FW | |
535 | * @frame_phys_addr : Physical address of cmd | |
536 | * @frame_count : Number of frames for the command | |
537 | * @regs : MFI register set | |
538 | */ | |
539 | static inline void | |
0c79e681 YB |
540 | megasas_fire_cmd_skinny(struct megasas_instance *instance, |
541 | dma_addr_t frame_phys_addr, | |
542 | u32 frame_count, | |
87911122 YB |
543 | struct megasas_register_set __iomem *regs) |
544 | { | |
0c79e681 | 545 | unsigned long flags; |
39a98554 | 546 | spin_lock_irqsave(&instance->hba_lock, flags); |
87911122 YB |
547 | writel(0, &(regs)->inbound_high_queue_port); |
548 | writel((frame_phys_addr | (frame_count<<1))|1, | |
549 | &(regs)->inbound_low_queue_port); | |
39a98554 | 550 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
551 | } | |
552 | ||
553 | /** | |
554 | * megasas_adp_reset_skinny - For controller reset | |
555 | * @regs: MFI register set | |
556 | */ | |
557 | static int | |
558 | megasas_adp_reset_skinny(struct megasas_instance *instance, | |
559 | struct megasas_register_set __iomem *regs) | |
560 | { | |
561 | return 0; | |
562 | } | |
563 | ||
564 | /** | |
565 | * megasas_check_reset_skinny - For controller reset check | |
566 | * @regs: MFI register set | |
567 | */ | |
568 | static int | |
569 | megasas_check_reset_skinny(struct megasas_instance *instance, | |
570 | struct megasas_register_set __iomem *regs) | |
571 | { | |
572 | return 0; | |
87911122 YB |
573 | } |
574 | ||
575 | static struct megasas_instance_template megasas_instance_template_skinny = { | |
576 | ||
577 | .fire_cmd = megasas_fire_cmd_skinny, | |
578 | .enable_intr = megasas_enable_intr_skinny, | |
579 | .disable_intr = megasas_disable_intr_skinny, | |
580 | .clear_intr = megasas_clear_intr_skinny, | |
581 | .read_fw_status_reg = megasas_read_fw_status_reg_skinny, | |
39a98554 | 582 | .adp_reset = megasas_adp_reset_skinny, |
583 | .check_reset = megasas_check_reset_skinny, | |
87911122 YB |
584 | }; |
585 | ||
586 | ||
6610a6b3 YB |
587 | /** |
588 | * The following functions are defined for gen2 (deviceid : 0x78 0x79) | |
589 | * controllers | |
590 | */ | |
591 | ||
592 | /** | |
593 | * megasas_enable_intr_gen2 - Enables interrupts | |
594 | * @regs: MFI register set | |
595 | */ | |
596 | static inline void | |
597 | megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) | |
598 | { | |
599 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); | |
600 | ||
601 | /* write ~0x00000005 (4 & 1) to the intr mask*/ | |
602 | writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); | |
603 | ||
604 | /* Dummy readl to force pci flush */ | |
605 | readl(®s->outbound_intr_mask); | |
606 | } | |
607 | ||
608 | /** | |
609 | * megasas_disable_intr_gen2 - Disables interrupt | |
610 | * @regs: MFI register set | |
611 | */ | |
612 | static inline void | |
613 | megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) | |
614 | { | |
615 | u32 mask = 0xFFFFFFFF; | |
616 | writel(mask, ®s->outbound_intr_mask); | |
617 | /* Dummy readl to force pci flush */ | |
618 | readl(®s->outbound_intr_mask); | |
619 | } | |
620 | ||
621 | /** | |
622 | * megasas_read_fw_status_reg_gen2 - returns the current FW status value | |
623 | * @regs: MFI register set | |
624 | */ | |
625 | static u32 | |
626 | megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) | |
627 | { | |
628 | return readl(&(regs)->outbound_scratch_pad); | |
629 | } | |
630 | ||
631 | /** | |
632 | * megasas_clear_interrupt_gen2 - Check & clear interrupt | |
633 | * @regs: MFI register set | |
634 | */ | |
635 | static int | |
636 | megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) | |
637 | { | |
638 | u32 status; | |
39a98554 | 639 | u32 mfiStatus = 0; |
6610a6b3 YB |
640 | /* |
641 | * Check if it is our interrupt | |
642 | */ | |
643 | status = readl(®s->outbound_intr_status); | |
644 | ||
39a98554 | 645 | if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) { |
646 | mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; | |
647 | } | |
648 | if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { | |
649 | mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; | |
650 | } | |
6610a6b3 YB |
651 | |
652 | /* | |
653 | * Clear the interrupt by writing back the same value | |
654 | */ | |
39a98554 | 655 | if (mfiStatus) |
656 | writel(status, ®s->outbound_doorbell_clear); | |
6610a6b3 YB |
657 | |
658 | /* Dummy readl to force pci flush */ | |
659 | readl(®s->outbound_intr_status); | |
660 | ||
39a98554 | 661 | return mfiStatus; |
6610a6b3 YB |
662 | } |
663 | /** | |
664 | * megasas_fire_cmd_gen2 - Sends command to the FW | |
665 | * @frame_phys_addr : Physical address of cmd | |
666 | * @frame_count : Number of frames for the command | |
667 | * @regs : MFI register set | |
668 | */ | |
669 | static inline void | |
0c79e681 YB |
670 | megasas_fire_cmd_gen2(struct megasas_instance *instance, |
671 | dma_addr_t frame_phys_addr, | |
672 | u32 frame_count, | |
6610a6b3 YB |
673 | struct megasas_register_set __iomem *regs) |
674 | { | |
39a98554 | 675 | unsigned long flags; |
676 | spin_lock_irqsave(&instance->hba_lock, flags); | |
6610a6b3 YB |
677 | writel((frame_phys_addr | (frame_count<<1))|1, |
678 | &(regs)->inbound_queue_port); | |
39a98554 | 679 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
680 | } | |
681 | ||
682 | /** | |
683 | * megasas_adp_reset_gen2 - For controller reset | |
684 | * @regs: MFI register set | |
685 | */ | |
686 | static int | |
687 | megasas_adp_reset_gen2(struct megasas_instance *instance, | |
688 | struct megasas_register_set __iomem *reg_set) | |
689 | { | |
690 | u32 retry = 0 ; | |
691 | u32 HostDiag; | |
692 | ||
693 | writel(0, ®_set->seq_offset); | |
694 | writel(4, ®_set->seq_offset); | |
695 | writel(0xb, ®_set->seq_offset); | |
696 | writel(2, ®_set->seq_offset); | |
697 | writel(7, ®_set->seq_offset); | |
698 | writel(0xd, ®_set->seq_offset); | |
699 | msleep(1000); | |
700 | ||
701 | HostDiag = (u32)readl(®_set->host_diag); | |
702 | ||
703 | while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { | |
704 | msleep(100); | |
705 | HostDiag = (u32)readl(®_set->host_diag); | |
706 | printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", | |
707 | retry, HostDiag); | |
708 | ||
709 | if (retry++ >= 100) | |
710 | return 1; | |
711 | ||
712 | } | |
713 | ||
714 | printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); | |
715 | ||
716 | writel((HostDiag | DIAG_RESET_ADAPTER), ®_set->host_diag); | |
717 | ||
718 | ssleep(10); | |
719 | ||
720 | HostDiag = (u32)readl(®_set->host_diag); | |
721 | while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { | |
722 | msleep(100); | |
723 | HostDiag = (u32)readl(®_set->host_diag); | |
724 | printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", | |
725 | retry, HostDiag); | |
726 | ||
727 | if (retry++ >= 1000) | |
728 | return 1; | |
729 | ||
730 | } | |
731 | return 0; | |
732 | } | |
733 | ||
734 | /** | |
735 | * megasas_check_reset_gen2 - For controller reset check | |
736 | * @regs: MFI register set | |
737 | */ | |
738 | static int | |
739 | megasas_check_reset_gen2(struct megasas_instance *instance, | |
740 | struct megasas_register_set __iomem *regs) | |
741 | { | |
707e09bd YB |
742 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { |
743 | return 1; | |
744 | } | |
745 | ||
39a98554 | 746 | return 0; |
6610a6b3 YB |
747 | } |
748 | ||
749 | static struct megasas_instance_template megasas_instance_template_gen2 = { | |
750 | ||
751 | .fire_cmd = megasas_fire_cmd_gen2, | |
752 | .enable_intr = megasas_enable_intr_gen2, | |
753 | .disable_intr = megasas_disable_intr_gen2, | |
754 | .clear_intr = megasas_clear_intr_gen2, | |
755 | .read_fw_status_reg = megasas_read_fw_status_reg_gen2, | |
39a98554 | 756 | .adp_reset = megasas_adp_reset_gen2, |
757 | .check_reset = megasas_check_reset_gen2, | |
6610a6b3 YB |
758 | }; |
759 | ||
f9876f0b SP |
760 | /** |
761 | * This is the end of set of functions & definitions | |
39a98554 | 762 | * specific to gen2 (deviceid : 0x78, 0x79) controllers |
f9876f0b SP |
763 | */ |
764 | ||
c4a3e0a5 BS |
765 | /** |
766 | * megasas_issue_polled - Issues a polling command | |
767 | * @instance: Adapter soft state | |
0d49016b | 768 | * @cmd: Command packet to be issued |
c4a3e0a5 BS |
769 | * |
770 | * For polling, MFI requires the cmd_status to be set to 0xFF before posting. | |
771 | */ | |
772 | static int | |
773 | megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
774 | { | |
775 | int i; | |
776 | u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; | |
777 | ||
778 | struct megasas_header *frame_hdr = &cmd->frame->hdr; | |
779 | ||
780 | frame_hdr->cmd_status = 0xFF; | |
781 | frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; | |
782 | ||
783 | /* | |
784 | * Issue the frame using inbound queue port | |
785 | */ | |
0c79e681 YB |
786 | instance->instancet->fire_cmd(instance, |
787 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 BS |
788 | |
789 | /* | |
790 | * Wait for cmd_status to change | |
791 | */ | |
792 | for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) { | |
793 | rmb(); | |
794 | msleep(1); | |
795 | } | |
796 | ||
797 | if (frame_hdr->cmd_status == 0xff) | |
798 | return -ETIME; | |
799 | ||
800 | return 0; | |
801 | } | |
802 | ||
803 | /** | |
804 | * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds | |
805 | * @instance: Adapter soft state | |
806 | * @cmd: Command to be issued | |
807 | * | |
808 | * This function waits on an event for the command to be returned from ISR. | |
2a3681e5 | 809 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
c4a3e0a5 BS |
810 | * Used to issue ioctl commands. |
811 | */ | |
812 | static int | |
813 | megasas_issue_blocked_cmd(struct megasas_instance *instance, | |
814 | struct megasas_cmd *cmd) | |
815 | { | |
816 | cmd->cmd_status = ENODATA; | |
817 | ||
0c79e681 YB |
818 | instance->instancet->fire_cmd(instance, |
819 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 | 820 | |
39a98554 | 821 | wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); |
c4a3e0a5 BS |
822 | |
823 | return 0; | |
824 | } | |
825 | ||
826 | /** | |
827 | * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd | |
828 | * @instance: Adapter soft state | |
829 | * @cmd_to_abort: Previously issued cmd to be aborted | |
830 | * | |
831 | * MFI firmware can abort previously issued AEN comamnd (automatic event | |
832 | * notification). The megasas_issue_blocked_abort_cmd() issues such abort | |
2a3681e5 SP |
833 | * cmd and waits for return status. |
834 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs | |
c4a3e0a5 BS |
835 | */ |
836 | static int | |
837 | megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, | |
838 | struct megasas_cmd *cmd_to_abort) | |
839 | { | |
840 | struct megasas_cmd *cmd; | |
841 | struct megasas_abort_frame *abort_fr; | |
842 | ||
843 | cmd = megasas_get_cmd(instance); | |
844 | ||
845 | if (!cmd) | |
846 | return -1; | |
847 | ||
848 | abort_fr = &cmd->frame->abort; | |
849 | ||
850 | /* | |
851 | * Prepare and issue the abort frame | |
852 | */ | |
853 | abort_fr->cmd = MFI_CMD_ABORT; | |
854 | abort_fr->cmd_status = 0xFF; | |
855 | abort_fr->flags = 0; | |
856 | abort_fr->abort_context = cmd_to_abort->index; | |
857 | abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; | |
858 | abort_fr->abort_mfi_phys_addr_hi = 0; | |
859 | ||
860 | cmd->sync_cmd = 1; | |
861 | cmd->cmd_status = 0xFF; | |
862 | ||
0c79e681 YB |
863 | instance->instancet->fire_cmd(instance, |
864 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 BS |
865 | |
866 | /* | |
867 | * Wait for this cmd to complete | |
868 | */ | |
39a98554 | 869 | wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF); |
870 | cmd->sync_cmd = 0; | |
c4a3e0a5 BS |
871 | |
872 | megasas_return_cmd(instance, cmd); | |
873 | return 0; | |
874 | } | |
875 | ||
876 | /** | |
877 | * megasas_make_sgl32 - Prepares 32-bit SGL | |
878 | * @instance: Adapter soft state | |
879 | * @scp: SCSI command from the mid-layer | |
880 | * @mfi_sgl: SGL to be filled in | |
881 | * | |
882 | * If successful, this function returns the number of SG elements. Otherwise, | |
883 | * it returnes -1. | |
884 | */ | |
858119e1 | 885 | static int |
c4a3e0a5 BS |
886 | megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, |
887 | union megasas_sgl *mfi_sgl) | |
888 | { | |
889 | int i; | |
890 | int sge_count; | |
891 | struct scatterlist *os_sgl; | |
892 | ||
155d98f0 FT |
893 | sge_count = scsi_dma_map(scp); |
894 | BUG_ON(sge_count < 0); | |
c4a3e0a5 | 895 | |
155d98f0 FT |
896 | if (sge_count) { |
897 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
898 | mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); | |
899 | mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); | |
900 | } | |
c4a3e0a5 | 901 | } |
c4a3e0a5 BS |
902 | return sge_count; |
903 | } | |
904 | ||
905 | /** | |
906 | * megasas_make_sgl64 - Prepares 64-bit SGL | |
907 | * @instance: Adapter soft state | |
908 | * @scp: SCSI command from the mid-layer | |
909 | * @mfi_sgl: SGL to be filled in | |
910 | * | |
911 | * If successful, this function returns the number of SG elements. Otherwise, | |
912 | * it returnes -1. | |
913 | */ | |
858119e1 | 914 | static int |
c4a3e0a5 BS |
915 | megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, |
916 | union megasas_sgl *mfi_sgl) | |
917 | { | |
918 | int i; | |
919 | int sge_count; | |
920 | struct scatterlist *os_sgl; | |
921 | ||
155d98f0 FT |
922 | sge_count = scsi_dma_map(scp); |
923 | BUG_ON(sge_count < 0); | |
c4a3e0a5 | 924 | |
155d98f0 FT |
925 | if (sge_count) { |
926 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
927 | mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); | |
928 | mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); | |
929 | } | |
c4a3e0a5 | 930 | } |
c4a3e0a5 BS |
931 | return sge_count; |
932 | } | |
933 | ||
f4c9a131 YB |
934 | /** |
935 | * megasas_make_sgl_skinny - Prepares IEEE SGL | |
936 | * @instance: Adapter soft state | |
937 | * @scp: SCSI command from the mid-layer | |
938 | * @mfi_sgl: SGL to be filled in | |
939 | * | |
940 | * If successful, this function returns the number of SG elements. Otherwise, | |
941 | * it returnes -1. | |
942 | */ | |
943 | static int | |
944 | megasas_make_sgl_skinny(struct megasas_instance *instance, | |
945 | struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) | |
946 | { | |
947 | int i; | |
948 | int sge_count; | |
949 | struct scatterlist *os_sgl; | |
950 | ||
951 | sge_count = scsi_dma_map(scp); | |
952 | ||
953 | if (sge_count) { | |
954 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
955 | mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); | |
956 | mfi_sgl->sge_skinny[i].phys_addr = | |
957 | sg_dma_address(os_sgl); | |
707e09bd | 958 | mfi_sgl->sge_skinny[i].flag = 0; |
f4c9a131 YB |
959 | } |
960 | } | |
961 | return sge_count; | |
962 | } | |
963 | ||
b1df99d9 SP |
964 | /** |
965 | * megasas_get_frame_count - Computes the number of frames | |
d532dbe2 | 966 | * @frame_type : type of frame- io or pthru frame |
b1df99d9 SP |
967 | * @sge_count : number of sg elements |
968 | * | |
969 | * Returns the number of frames required for numnber of sge's (sge_count) | |
970 | */ | |
971 | ||
f4c9a131 YB |
972 | static u32 megasas_get_frame_count(struct megasas_instance *instance, |
973 | u8 sge_count, u8 frame_type) | |
b1df99d9 SP |
974 | { |
975 | int num_cnt; | |
976 | int sge_bytes; | |
977 | u32 sge_sz; | |
978 | u32 frame_count=0; | |
979 | ||
980 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : | |
981 | sizeof(struct megasas_sge32); | |
982 | ||
f4c9a131 YB |
983 | if (instance->flag_ieee) { |
984 | sge_sz = sizeof(struct megasas_sge_skinny); | |
985 | } | |
986 | ||
b1df99d9 | 987 | /* |
d532dbe2 | 988 | * Main frame can contain 2 SGEs for 64-bit SGLs and |
989 | * 3 SGEs for 32-bit SGLs for ldio & | |
990 | * 1 SGEs for 64-bit SGLs and | |
991 | * 2 SGEs for 32-bit SGLs for pthru frame | |
992 | */ | |
993 | if (unlikely(frame_type == PTHRU_FRAME)) { | |
f4c9a131 YB |
994 | if (instance->flag_ieee == 1) { |
995 | num_cnt = sge_count - 1; | |
996 | } else if (IS_DMA64) | |
d532dbe2 | 997 | num_cnt = sge_count - 1; |
998 | else | |
999 | num_cnt = sge_count - 2; | |
1000 | } else { | |
f4c9a131 YB |
1001 | if (instance->flag_ieee == 1) { |
1002 | num_cnt = sge_count - 1; | |
1003 | } else if (IS_DMA64) | |
d532dbe2 | 1004 | num_cnt = sge_count - 2; |
1005 | else | |
1006 | num_cnt = sge_count - 3; | |
1007 | } | |
b1df99d9 SP |
1008 | |
1009 | if(num_cnt>0){ | |
1010 | sge_bytes = sge_sz * num_cnt; | |
1011 | ||
1012 | frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + | |
1013 | ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; | |
1014 | } | |
1015 | /* Main frame */ | |
1016 | frame_count +=1; | |
1017 | ||
1018 | if (frame_count > 7) | |
1019 | frame_count = 8; | |
1020 | return frame_count; | |
1021 | } | |
1022 | ||
c4a3e0a5 BS |
1023 | /** |
1024 | * megasas_build_dcdb - Prepares a direct cdb (DCDB) command | |
1025 | * @instance: Adapter soft state | |
1026 | * @scp: SCSI command | |
1027 | * @cmd: Command to be prepared in | |
1028 | * | |
1029 | * This function prepares CDB commands. These are typcially pass-through | |
1030 | * commands to the devices. | |
1031 | */ | |
858119e1 | 1032 | static int |
c4a3e0a5 BS |
1033 | megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, |
1034 | struct megasas_cmd *cmd) | |
1035 | { | |
c4a3e0a5 BS |
1036 | u32 is_logical; |
1037 | u32 device_id; | |
1038 | u16 flags = 0; | |
1039 | struct megasas_pthru_frame *pthru; | |
1040 | ||
1041 | is_logical = MEGASAS_IS_LOGICAL(scp); | |
1042 | device_id = MEGASAS_DEV_INDEX(instance, scp); | |
1043 | pthru = (struct megasas_pthru_frame *)cmd->frame; | |
1044 | ||
1045 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) | |
1046 | flags = MFI_FRAME_DIR_WRITE; | |
1047 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) | |
1048 | flags = MFI_FRAME_DIR_READ; | |
1049 | else if (scp->sc_data_direction == PCI_DMA_NONE) | |
1050 | flags = MFI_FRAME_DIR_NONE; | |
1051 | ||
f4c9a131 YB |
1052 | if (instance->flag_ieee == 1) { |
1053 | flags |= MFI_FRAME_IEEE; | |
1054 | } | |
1055 | ||
c4a3e0a5 BS |
1056 | /* |
1057 | * Prepare the DCDB frame | |
1058 | */ | |
1059 | pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; | |
1060 | pthru->cmd_status = 0x0; | |
1061 | pthru->scsi_status = 0x0; | |
1062 | pthru->target_id = device_id; | |
1063 | pthru->lun = scp->device->lun; | |
1064 | pthru->cdb_len = scp->cmd_len; | |
1065 | pthru->timeout = 0; | |
780a3762 | 1066 | pthru->pad_0 = 0; |
c4a3e0a5 | 1067 | pthru->flags = flags; |
155d98f0 | 1068 | pthru->data_xfer_len = scsi_bufflen(scp); |
c4a3e0a5 BS |
1069 | |
1070 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1071 | ||
8d568253 YB |
1072 | /* |
1073 | * If the command is for the tape device, set the | |
1074 | * pthru timeout to the os layer timeout value. | |
1075 | */ | |
1076 | if (scp->device->type == TYPE_TAPE) { | |
1077 | if ((scp->request->timeout / HZ) > 0xFFFF) | |
1078 | pthru->timeout = 0xFFFF; | |
1079 | else | |
1080 | pthru->timeout = scp->request->timeout / HZ; | |
1081 | } | |
1082 | ||
c4a3e0a5 BS |
1083 | /* |
1084 | * Construct SGL | |
1085 | */ | |
f4c9a131 YB |
1086 | if (instance->flag_ieee == 1) { |
1087 | pthru->flags |= MFI_FRAME_SGL64; | |
1088 | pthru->sge_count = megasas_make_sgl_skinny(instance, scp, | |
1089 | &pthru->sgl); | |
1090 | } else if (IS_DMA64) { | |
c4a3e0a5 BS |
1091 | pthru->flags |= MFI_FRAME_SGL64; |
1092 | pthru->sge_count = megasas_make_sgl64(instance, scp, | |
1093 | &pthru->sgl); | |
1094 | } else | |
1095 | pthru->sge_count = megasas_make_sgl32(instance, scp, | |
1096 | &pthru->sgl); | |
1097 | ||
bdc6fb8d YB |
1098 | if (pthru->sge_count > instance->max_num_sge) { |
1099 | printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", | |
1100 | pthru->sge_count); | |
1101 | return 0; | |
1102 | } | |
1103 | ||
c4a3e0a5 BS |
1104 | /* |
1105 | * Sense info specific | |
1106 | */ | |
1107 | pthru->sense_len = SCSI_SENSE_BUFFERSIZE; | |
1108 | pthru->sense_buf_phys_addr_hi = 0; | |
1109 | pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; | |
1110 | ||
c4a3e0a5 BS |
1111 | /* |
1112 | * Compute the total number of frames this command consumes. FW uses | |
1113 | * this number to pull sufficient number of frames from host memory. | |
1114 | */ | |
f4c9a131 | 1115 | cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, |
d532dbe2 | 1116 | PTHRU_FRAME); |
c4a3e0a5 BS |
1117 | |
1118 | return cmd->frame_count; | |
1119 | } | |
1120 | ||
1121 | /** | |
1122 | * megasas_build_ldio - Prepares IOs to logical devices | |
1123 | * @instance: Adapter soft state | |
1124 | * @scp: SCSI command | |
fd589a8f | 1125 | * @cmd: Command to be prepared |
c4a3e0a5 BS |
1126 | * |
1127 | * Frames (and accompanying SGLs) for regular SCSI IOs use this function. | |
1128 | */ | |
858119e1 | 1129 | static int |
c4a3e0a5 BS |
1130 | megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, |
1131 | struct megasas_cmd *cmd) | |
1132 | { | |
c4a3e0a5 BS |
1133 | u32 device_id; |
1134 | u8 sc = scp->cmnd[0]; | |
1135 | u16 flags = 0; | |
1136 | struct megasas_io_frame *ldio; | |
1137 | ||
1138 | device_id = MEGASAS_DEV_INDEX(instance, scp); | |
1139 | ldio = (struct megasas_io_frame *)cmd->frame; | |
1140 | ||
1141 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) | |
1142 | flags = MFI_FRAME_DIR_WRITE; | |
1143 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) | |
1144 | flags = MFI_FRAME_DIR_READ; | |
1145 | ||
f4c9a131 YB |
1146 | if (instance->flag_ieee == 1) { |
1147 | flags |= MFI_FRAME_IEEE; | |
1148 | } | |
1149 | ||
c4a3e0a5 | 1150 | /* |
b1df99d9 | 1151 | * Prepare the Logical IO frame: 2nd bit is zero for all read cmds |
c4a3e0a5 BS |
1152 | */ |
1153 | ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; | |
1154 | ldio->cmd_status = 0x0; | |
1155 | ldio->scsi_status = 0x0; | |
1156 | ldio->target_id = device_id; | |
1157 | ldio->timeout = 0; | |
1158 | ldio->reserved_0 = 0; | |
1159 | ldio->pad_0 = 0; | |
1160 | ldio->flags = flags; | |
1161 | ldio->start_lba_hi = 0; | |
1162 | ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; | |
1163 | ||
1164 | /* | |
1165 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1166 | */ | |
1167 | if (scp->cmd_len == 6) { | |
1168 | ldio->lba_count = (u32) scp->cmnd[4]; | |
1169 | ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | | |
1170 | ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; | |
1171 | ||
1172 | ldio->start_lba_lo &= 0x1FFFFF; | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1177 | */ | |
1178 | else if (scp->cmd_len == 10) { | |
1179 | ldio->lba_count = (u32) scp->cmnd[8] | | |
1180 | ((u32) scp->cmnd[7] << 8); | |
1181 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | | |
1182 | ((u32) scp->cmnd[3] << 16) | | |
1183 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1188 | */ | |
1189 | else if (scp->cmd_len == 12) { | |
1190 | ldio->lba_count = ((u32) scp->cmnd[6] << 24) | | |
1191 | ((u32) scp->cmnd[7] << 16) | | |
1192 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; | |
1193 | ||
1194 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | | |
1195 | ((u32) scp->cmnd[3] << 16) | | |
1196 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * 16-byte READ(0x88) or WRITE(0x8A) cdb | |
1201 | */ | |
1202 | else if (scp->cmd_len == 16) { | |
1203 | ldio->lba_count = ((u32) scp->cmnd[10] << 24) | | |
1204 | ((u32) scp->cmnd[11] << 16) | | |
1205 | ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; | |
1206 | ||
1207 | ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | | |
1208 | ((u32) scp->cmnd[7] << 16) | | |
1209 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; | |
1210 | ||
1211 | ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | | |
1212 | ((u32) scp->cmnd[3] << 16) | | |
1213 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
1214 | ||
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * Construct SGL | |
1219 | */ | |
f4c9a131 YB |
1220 | if (instance->flag_ieee) { |
1221 | ldio->flags |= MFI_FRAME_SGL64; | |
1222 | ldio->sge_count = megasas_make_sgl_skinny(instance, scp, | |
1223 | &ldio->sgl); | |
1224 | } else if (IS_DMA64) { | |
c4a3e0a5 BS |
1225 | ldio->flags |= MFI_FRAME_SGL64; |
1226 | ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); | |
1227 | } else | |
1228 | ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); | |
1229 | ||
bdc6fb8d YB |
1230 | if (ldio->sge_count > instance->max_num_sge) { |
1231 | printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", | |
1232 | ldio->sge_count); | |
1233 | return 0; | |
1234 | } | |
1235 | ||
c4a3e0a5 BS |
1236 | /* |
1237 | * Sense info specific | |
1238 | */ | |
1239 | ldio->sense_len = SCSI_SENSE_BUFFERSIZE; | |
1240 | ldio->sense_buf_phys_addr_hi = 0; | |
1241 | ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; | |
1242 | ||
b1df99d9 SP |
1243 | /* |
1244 | * Compute the total number of frames this command consumes. FW uses | |
1245 | * this number to pull sufficient number of frames from host memory. | |
1246 | */ | |
f4c9a131 YB |
1247 | cmd->frame_count = megasas_get_frame_count(instance, |
1248 | ldio->sge_count, IO_FRAME); | |
c4a3e0a5 BS |
1249 | |
1250 | return cmd->frame_count; | |
1251 | } | |
1252 | ||
1253 | /** | |
cb59aa6a SP |
1254 | * megasas_is_ldio - Checks if the cmd is for logical drive |
1255 | * @scmd: SCSI command | |
0d49016b | 1256 | * |
cb59aa6a | 1257 | * Called by megasas_queue_command to find out if the command to be queued |
0d49016b | 1258 | * is a logical drive command |
c4a3e0a5 | 1259 | */ |
cb59aa6a | 1260 | static inline int megasas_is_ldio(struct scsi_cmnd *cmd) |
c4a3e0a5 | 1261 | { |
cb59aa6a SP |
1262 | if (!MEGASAS_IS_LOGICAL(cmd)) |
1263 | return 0; | |
1264 | switch (cmd->cmnd[0]) { | |
1265 | case READ_10: | |
1266 | case WRITE_10: | |
1267 | case READ_12: | |
1268 | case WRITE_12: | |
1269 | case READ_6: | |
1270 | case WRITE_6: | |
1271 | case READ_16: | |
1272 | case WRITE_16: | |
1273 | return 1; | |
1274 | default: | |
1275 | return 0; | |
c4a3e0a5 | 1276 | } |
c4a3e0a5 BS |
1277 | } |
1278 | ||
658dcedb SP |
1279 | /** |
1280 | * megasas_dump_pending_frames - Dumps the frame address of all pending cmds | |
1281 | * in FW | |
1282 | * @instance: Adapter soft state | |
1283 | */ | |
1284 | static inline void | |
1285 | megasas_dump_pending_frames(struct megasas_instance *instance) | |
1286 | { | |
1287 | struct megasas_cmd *cmd; | |
1288 | int i,n; | |
1289 | union megasas_sgl *mfi_sgl; | |
1290 | struct megasas_io_frame *ldio; | |
1291 | struct megasas_pthru_frame *pthru; | |
1292 | u32 sgcount; | |
1293 | u32 max_cmd = instance->max_fw_cmds; | |
1294 | ||
1295 | printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); | |
1296 | printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); | |
1297 | if (IS_DMA64) | |
1298 | printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); | |
1299 | else | |
1300 | printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); | |
1301 | ||
1302 | printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); | |
1303 | for (i = 0; i < max_cmd; i++) { | |
1304 | cmd = instance->cmd_list[i]; | |
1305 | if(!cmd->scmd) | |
1306 | continue; | |
1307 | printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); | |
1308 | if (megasas_is_ldio(cmd->scmd)){ | |
1309 | ldio = (struct megasas_io_frame *)cmd->frame; | |
1310 | mfi_sgl = &ldio->sgl; | |
1311 | sgcount = ldio->sge_count; | |
1312 | printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount); | |
1313 | } | |
1314 | else { | |
1315 | pthru = (struct megasas_pthru_frame *) cmd->frame; | |
1316 | mfi_sgl = &pthru->sgl; | |
1317 | sgcount = pthru->sge_count; | |
1318 | printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount); | |
1319 | } | |
1320 | if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ | |
1321 | for (n = 0; n < sgcount; n++){ | |
1322 | if (IS_DMA64) | |
1323 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ; | |
1324 | else | |
1325 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; | |
1326 | } | |
1327 | } | |
1328 | printk(KERN_ERR "\n"); | |
1329 | } /*for max_cmd*/ | |
1330 | printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); | |
1331 | for (i = 0; i < max_cmd; i++) { | |
1332 | ||
1333 | cmd = instance->cmd_list[i]; | |
1334 | ||
1335 | if(cmd->sync_cmd == 1){ | |
1336 | printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); | |
1337 | } | |
1338 | } | |
1339 | printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); | |
1340 | } | |
1341 | ||
c4a3e0a5 BS |
1342 | /** |
1343 | * megasas_queue_command - Queue entry point | |
1344 | * @scmd: SCSI command to be queued | |
1345 | * @done: Callback entry point | |
1346 | */ | |
1347 | static int | |
f281233d | 1348 | megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) |
c4a3e0a5 BS |
1349 | { |
1350 | u32 frame_count; | |
c4a3e0a5 BS |
1351 | struct megasas_cmd *cmd; |
1352 | struct megasas_instance *instance; | |
39a98554 | 1353 | unsigned long flags; |
c4a3e0a5 BS |
1354 | |
1355 | instance = (struct megasas_instance *) | |
1356 | scmd->device->host->hostdata; | |
af37acfb | 1357 | |
39a98554 | 1358 | if (instance->issuepend_done == 0) |
af37acfb SP |
1359 | return SCSI_MLQUEUE_HOST_BUSY; |
1360 | ||
39a98554 | 1361 | spin_lock_irqsave(&instance->hba_lock, flags); |
1362 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
1363 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1364 | return SCSI_MLQUEUE_HOST_BUSY; | |
1365 | } | |
1366 | ||
1367 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1368 | ||
c4a3e0a5 BS |
1369 | scmd->scsi_done = done; |
1370 | scmd->result = 0; | |
1371 | ||
cb59aa6a SP |
1372 | if (MEGASAS_IS_LOGICAL(scmd) && |
1373 | (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { | |
1374 | scmd->result = DID_BAD_TARGET << 16; | |
1375 | goto out_done; | |
c4a3e0a5 BS |
1376 | } |
1377 | ||
02b01e01 SP |
1378 | switch (scmd->cmnd[0]) { |
1379 | case SYNCHRONIZE_CACHE: | |
1380 | /* | |
1381 | * FW takes care of flush cache on its own | |
1382 | * No need to send it down | |
1383 | */ | |
1384 | scmd->result = DID_OK << 16; | |
1385 | goto out_done; | |
1386 | default: | |
1387 | break; | |
1388 | } | |
1389 | ||
cb59aa6a SP |
1390 | cmd = megasas_get_cmd(instance); |
1391 | if (!cmd) | |
1392 | return SCSI_MLQUEUE_HOST_BUSY; | |
1393 | ||
1394 | /* | |
1395 | * Logical drive command | |
1396 | */ | |
1397 | if (megasas_is_ldio(scmd)) | |
1398 | frame_count = megasas_build_ldio(instance, scmd, cmd); | |
1399 | else | |
1400 | frame_count = megasas_build_dcdb(instance, scmd, cmd); | |
1401 | ||
1402 | if (!frame_count) | |
1403 | goto out_return_cmd; | |
1404 | ||
c4a3e0a5 | 1405 | cmd->scmd = scmd; |
05e9ebbe | 1406 | scmd->SCp.ptr = (char *)cmd; |
c4a3e0a5 BS |
1407 | |
1408 | /* | |
1409 | * Issue the command to the FW | |
1410 | */ | |
e4a082c7 | 1411 | atomic_inc(&instance->fw_outstanding); |
c4a3e0a5 | 1412 | |
0c79e681 YB |
1413 | instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, |
1414 | cmd->frame_count-1, instance->reg_set); | |
ad84db2e | 1415 | /* |
1416 | * Check if we have pend cmds to be completed | |
1417 | */ | |
1418 | if (poll_mode_io && atomic_read(&instance->fw_outstanding)) | |
1419 | tasklet_schedule(&instance->isr_tasklet); | |
1420 | ||
c4a3e0a5 BS |
1421 | |
1422 | return 0; | |
cb59aa6a SP |
1423 | |
1424 | out_return_cmd: | |
1425 | megasas_return_cmd(instance, cmd); | |
1426 | out_done: | |
1427 | done(scmd); | |
1428 | return 0; | |
c4a3e0a5 BS |
1429 | } |
1430 | ||
f281233d JG |
1431 | static DEF_SCSI_QCMD(megasas_queue_command) |
1432 | ||
044833b5 YB |
1433 | static struct megasas_instance *megasas_lookup_instance(u16 host_no) |
1434 | { | |
1435 | int i; | |
1436 | ||
1437 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
1438 | ||
1439 | if ((megasas_mgmt_info.instance[i]) && | |
1440 | (megasas_mgmt_info.instance[i]->host->host_no == host_no)) | |
1441 | return megasas_mgmt_info.instance[i]; | |
1442 | } | |
1443 | ||
1444 | return NULL; | |
1445 | } | |
1446 | ||
147aab6a CH |
1447 | static int megasas_slave_configure(struct scsi_device *sdev) |
1448 | { | |
044833b5 YB |
1449 | u16 pd_index = 0; |
1450 | struct megasas_instance *instance ; | |
1451 | ||
1452 | instance = megasas_lookup_instance(sdev->host->host_no); | |
1453 | ||
147aab6a | 1454 | /* |
044833b5 YB |
1455 | * Don't export physical disk devices to the disk driver. |
1456 | * | |
1457 | * FIXME: Currently we don't export them to the midlayer at all. | |
1458 | * That will be fixed once LSI engineers have audited the | |
1459 | * firmware for possible issues. | |
1460 | */ | |
1461 | if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && | |
1462 | sdev->type == TYPE_DISK) { | |
1463 | pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + | |
1464 | sdev->id; | |
1465 | if (instance->pd_list[pd_index].driveState == | |
1466 | MR_PD_STATE_SYSTEM) { | |
1467 | blk_queue_rq_timeout(sdev->request_queue, | |
1468 | MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); | |
1469 | return 0; | |
1470 | } | |
147aab6a | 1471 | return -ENXIO; |
044833b5 | 1472 | } |
e5b3a65f CH |
1473 | |
1474 | /* | |
044833b5 YB |
1475 | * The RAID firmware may require extended timeouts. |
1476 | */ | |
1477 | blk_queue_rq_timeout(sdev->request_queue, | |
1478 | MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); | |
1479 | return 0; | |
1480 | } | |
1481 | ||
1482 | static int megasas_slave_alloc(struct scsi_device *sdev) | |
1483 | { | |
1484 | u16 pd_index = 0; | |
1485 | struct megasas_instance *instance ; | |
1486 | instance = megasas_lookup_instance(sdev->host->host_no); | |
1487 | if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && | |
1488 | (sdev->type == TYPE_DISK)) { | |
1489 | /* | |
1490 | * Open the OS scan to the SYSTEM PD | |
1491 | */ | |
1492 | pd_index = | |
1493 | (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + | |
1494 | sdev->id; | |
1495 | if ((instance->pd_list[pd_index].driveState == | |
1496 | MR_PD_STATE_SYSTEM) && | |
1497 | (instance->pd_list[pd_index].driveType == | |
1498 | TYPE_DISK)) { | |
1499 | return 0; | |
1500 | } | |
1501 | return -ENXIO; | |
1502 | } | |
147aab6a CH |
1503 | return 0; |
1504 | } | |
1505 | ||
39a98554 | 1506 | static void megaraid_sas_kill_hba(struct megasas_instance *instance) |
1507 | { | |
1508 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1509 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1510 | writel(MFI_STOP_ADP, | |
1511 | &instance->reg_set->reserved_0[0]); | |
1512 | } else { | |
1513 | writel(MFI_STOP_ADP, | |
1514 | &instance->reg_set->inbound_doorbell); | |
1515 | } | |
1516 | } | |
1517 | ||
7343eb65 | 1518 | /** |
1519 | * megasas_complete_cmd_dpc - Returns FW's controller structure | |
1520 | * @instance_addr: Address of adapter soft state | |
1521 | * | |
1522 | * Tasklet to complete cmds | |
1523 | */ | |
1524 | static void megasas_complete_cmd_dpc(unsigned long instance_addr) | |
1525 | { | |
1526 | u32 producer; | |
1527 | u32 consumer; | |
1528 | u32 context; | |
1529 | struct megasas_cmd *cmd; | |
1530 | struct megasas_instance *instance = | |
1531 | (struct megasas_instance *)instance_addr; | |
1532 | unsigned long flags; | |
1533 | ||
1534 | /* If we have already declared adapter dead, donot complete cmds */ | |
39a98554 | 1535 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) |
7343eb65 | 1536 | return; |
1537 | ||
1538 | spin_lock_irqsave(&instance->completion_lock, flags); | |
1539 | ||
1540 | producer = *instance->producer; | |
1541 | consumer = *instance->consumer; | |
1542 | ||
1543 | while (consumer != producer) { | |
1544 | context = instance->reply_queue[consumer]; | |
39a98554 | 1545 | if (context >= instance->max_fw_cmds) { |
1546 | printk(KERN_ERR "Unexpected context value %x\n", | |
1547 | context); | |
1548 | BUG(); | |
1549 | } | |
7343eb65 | 1550 | |
1551 | cmd = instance->cmd_list[context]; | |
1552 | ||
1553 | megasas_complete_cmd(instance, cmd, DID_OK); | |
1554 | ||
1555 | consumer++; | |
1556 | if (consumer == (instance->max_fw_cmds + 1)) { | |
1557 | consumer = 0; | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | *instance->consumer = producer; | |
1562 | ||
1563 | spin_unlock_irqrestore(&instance->completion_lock, flags); | |
1564 | ||
1565 | /* | |
1566 | * Check if we can restore can_queue | |
1567 | */ | |
1568 | if (instance->flag & MEGASAS_FW_BUSY | |
1569 | && time_after(jiffies, instance->last_time + 5 * HZ) | |
1570 | && atomic_read(&instance->fw_outstanding) < 17) { | |
1571 | ||
1572 | spin_lock_irqsave(instance->host->host_lock, flags); | |
1573 | instance->flag &= ~MEGASAS_FW_BUSY; | |
7bebf5c7 YB |
1574 | if ((instance->pdev->device == |
1575 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1576 | (instance->pdev->device == | |
1577 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1578 | instance->host->can_queue = | |
1579 | instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; | |
1580 | } else | |
1581 | instance->host->can_queue = | |
7343eb65 | 1582 | instance->max_fw_cmds - MEGASAS_INT_CMDS; |
1583 | ||
1584 | spin_unlock_irqrestore(instance->host->host_lock, flags); | |
1585 | } | |
1586 | } | |
1587 | ||
707e09bd YB |
1588 | static void |
1589 | megasas_internal_reset_defer_cmds(struct megasas_instance *instance); | |
1590 | ||
1591 | static void | |
1592 | process_fw_state_change_wq(struct work_struct *work); | |
1593 | ||
1594 | void megasas_do_ocr(struct megasas_instance *instance) | |
1595 | { | |
1596 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || | |
1597 | (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || | |
1598 | (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { | |
1599 | *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; | |
1600 | } | |
1601 | instance->instancet->disable_intr(instance->reg_set); | |
1602 | instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; | |
1603 | instance->issuepend_done = 0; | |
1604 | ||
1605 | atomic_set(&instance->fw_outstanding, 0); | |
1606 | megasas_internal_reset_defer_cmds(instance); | |
1607 | process_fw_state_change_wq(&instance->work_init); | |
1608 | } | |
1609 | ||
c4a3e0a5 BS |
1610 | /** |
1611 | * megasas_wait_for_outstanding - Wait for all outstanding cmds | |
1612 | * @instance: Adapter soft state | |
1613 | * | |
1614 | * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to | |
1615 | * complete all its outstanding commands. Returns error if one or more IOs | |
1616 | * are pending after this time period. It also marks the controller dead. | |
1617 | */ | |
1618 | static int megasas_wait_for_outstanding(struct megasas_instance *instance) | |
1619 | { | |
1620 | int i; | |
39a98554 | 1621 | u32 reset_index; |
c4a3e0a5 | 1622 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; |
39a98554 | 1623 | u8 adprecovery; |
1624 | unsigned long flags; | |
1625 | struct list_head clist_local; | |
1626 | struct megasas_cmd *reset_cmd; | |
707e09bd YB |
1627 | u32 fw_state; |
1628 | u8 kill_adapter_flag; | |
39a98554 | 1629 | |
1630 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1631 | adprecovery = instance->adprecovery; | |
1632 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1633 | ||
1634 | if (adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
1635 | ||
1636 | INIT_LIST_HEAD(&clist_local); | |
1637 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1638 | list_splice_init(&instance->internal_reset_pending_q, | |
1639 | &clist_local); | |
1640 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1641 | ||
1642 | printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); | |
1643 | for (i = 0; i < wait_time; i++) { | |
1644 | msleep(1000); | |
1645 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1646 | adprecovery = instance->adprecovery; | |
1647 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1648 | if (adprecovery == MEGASAS_HBA_OPERATIONAL) | |
1649 | break; | |
1650 | } | |
1651 | ||
1652 | if (adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
1653 | printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); | |
1654 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1655 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; | |
1656 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1657 | return FAILED; | |
1658 | } | |
1659 | ||
1660 | reset_index = 0; | |
1661 | while (!list_empty(&clist_local)) { | |
1662 | reset_cmd = list_entry((&clist_local)->next, | |
1663 | struct megasas_cmd, list); | |
1664 | list_del_init(&reset_cmd->list); | |
1665 | if (reset_cmd->scmd) { | |
1666 | reset_cmd->scmd->result = DID_RESET << 16; | |
1667 | printk(KERN_NOTICE "%d:%p reset [%02x], %#lx\n", | |
1668 | reset_index, reset_cmd, | |
1669 | reset_cmd->scmd->cmnd[0], | |
1670 | reset_cmd->scmd->serial_number); | |
1671 | ||
1672 | reset_cmd->scmd->scsi_done(reset_cmd->scmd); | |
1673 | megasas_return_cmd(instance, reset_cmd); | |
1674 | } else if (reset_cmd->sync_cmd) { | |
1675 | printk(KERN_NOTICE "megasas:%p synch cmds" | |
1676 | "reset queue\n", | |
1677 | reset_cmd); | |
1678 | ||
1679 | reset_cmd->cmd_status = ENODATA; | |
1680 | instance->instancet->fire_cmd(instance, | |
1681 | reset_cmd->frame_phys_addr, | |
1682 | 0, instance->reg_set); | |
1683 | } else { | |
1684 | printk(KERN_NOTICE "megasas: %p unexpected" | |
1685 | "cmds lst\n", | |
1686 | reset_cmd); | |
1687 | } | |
1688 | reset_index++; | |
1689 | } | |
1690 | ||
1691 | return SUCCESS; | |
1692 | } | |
c4a3e0a5 BS |
1693 | |
1694 | for (i = 0; i < wait_time; i++) { | |
1695 | ||
e4a082c7 SP |
1696 | int outstanding = atomic_read(&instance->fw_outstanding); |
1697 | ||
1698 | if (!outstanding) | |
c4a3e0a5 BS |
1699 | break; |
1700 | ||
1701 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
1702 | printk(KERN_NOTICE "megasas: [%2d]waiting for %d " | |
e4a082c7 | 1703 | "commands to complete\n",i,outstanding); |
7343eb65 | 1704 | /* |
1705 | * Call cmd completion routine. Cmd to be | |
1706 | * be completed directly without depending on isr. | |
1707 | */ | |
1708 | megasas_complete_cmd_dpc((unsigned long)instance); | |
c4a3e0a5 BS |
1709 | } |
1710 | ||
1711 | msleep(1000); | |
1712 | } | |
1713 | ||
707e09bd YB |
1714 | i = 0; |
1715 | kill_adapter_flag = 0; | |
1716 | do { | |
1717 | fw_state = instance->instancet->read_fw_status_reg( | |
1718 | instance->reg_set) & MFI_STATE_MASK; | |
1719 | if ((fw_state == MFI_STATE_FAULT) && | |
1720 | (instance->disableOnlineCtrlReset == 0)) { | |
1721 | if (i == 3) { | |
1722 | kill_adapter_flag = 2; | |
1723 | break; | |
1724 | } | |
1725 | megasas_do_ocr(instance); | |
1726 | kill_adapter_flag = 1; | |
1727 | ||
1728 | /* wait for 1 secs to let FW finish the pending cmds */ | |
1729 | msleep(1000); | |
1730 | } | |
1731 | i++; | |
1732 | } while (i <= 3); | |
1733 | ||
1734 | if (atomic_read(&instance->fw_outstanding) && | |
1735 | !kill_adapter_flag) { | |
1736 | if (instance->disableOnlineCtrlReset == 0) { | |
1737 | ||
1738 | megasas_do_ocr(instance); | |
1739 | ||
1740 | /* wait for 5 secs to let FW finish the pending cmds */ | |
1741 | for (i = 0; i < wait_time; i++) { | |
1742 | int outstanding = | |
1743 | atomic_read(&instance->fw_outstanding); | |
1744 | if (!outstanding) | |
1745 | return SUCCESS; | |
1746 | msleep(1000); | |
1747 | } | |
1748 | } | |
1749 | } | |
1750 | ||
1751 | if (atomic_read(&instance->fw_outstanding) || | |
1752 | (kill_adapter_flag == 2)) { | |
39a98554 | 1753 | printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); |
e3bbff9f SP |
1754 | /* |
1755 | * Send signal to FW to stop processing any pending cmds. | |
1756 | * The controller will be taken offline by the OS now. | |
1757 | */ | |
0c79e681 YB |
1758 | if ((instance->pdev->device == |
1759 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1760 | (instance->pdev->device == | |
1761 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1762 | writel(MFI_STOP_ADP, | |
1763 | &instance->reg_set->reserved_0[0]); | |
1764 | } else { | |
1765 | writel(MFI_STOP_ADP, | |
e3bbff9f | 1766 | &instance->reg_set->inbound_doorbell); |
0c79e681 | 1767 | } |
658dcedb | 1768 | megasas_dump_pending_frames(instance); |
39a98554 | 1769 | spin_lock_irqsave(&instance->hba_lock, flags); |
1770 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; | |
1771 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
c4a3e0a5 BS |
1772 | return FAILED; |
1773 | } | |
1774 | ||
39a98554 | 1775 | printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); |
1776 | ||
c4a3e0a5 BS |
1777 | return SUCCESS; |
1778 | } | |
1779 | ||
1780 | /** | |
1781 | * megasas_generic_reset - Generic reset routine | |
1782 | * @scmd: Mid-layer SCSI command | |
1783 | * | |
1784 | * This routine implements a generic reset handler for device, bus and host | |
1785 | * reset requests. Device, bus and host specific reset handlers can use this | |
1786 | * function after they do their specific tasks. | |
1787 | */ | |
1788 | static int megasas_generic_reset(struct scsi_cmnd *scmd) | |
1789 | { | |
1790 | int ret_val; | |
1791 | struct megasas_instance *instance; | |
1792 | ||
1793 | instance = (struct megasas_instance *)scmd->device->host->hostdata; | |
1794 | ||
05e9ebbe SP |
1795 | scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n", |
1796 | scmd->serial_number, scmd->cmnd[0], scmd->retries); | |
c4a3e0a5 | 1797 | |
39a98554 | 1798 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
c4a3e0a5 BS |
1799 | printk(KERN_ERR "megasas: cannot recover from previous reset " |
1800 | "failures\n"); | |
1801 | return FAILED; | |
1802 | } | |
1803 | ||
c4a3e0a5 | 1804 | ret_val = megasas_wait_for_outstanding(instance); |
c4a3e0a5 BS |
1805 | if (ret_val == SUCCESS) |
1806 | printk(KERN_NOTICE "megasas: reset successful \n"); | |
1807 | else | |
1808 | printk(KERN_ERR "megasas: failed to do reset\n"); | |
1809 | ||
c4a3e0a5 BS |
1810 | return ret_val; |
1811 | } | |
1812 | ||
05e9ebbe SP |
1813 | /** |
1814 | * megasas_reset_timer - quiesce the adapter if required | |
1815 | * @scmd: scsi cmnd | |
1816 | * | |
1817 | * Sets the FW busy flag and reduces the host->can_queue if the | |
1818 | * cmd has not been completed within the timeout period. | |
1819 | */ | |
1820 | static enum | |
242f9dcb | 1821 | blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) |
05e9ebbe SP |
1822 | { |
1823 | struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr; | |
1824 | struct megasas_instance *instance; | |
1825 | unsigned long flags; | |
1826 | ||
1827 | if (time_after(jiffies, scmd->jiffies_at_alloc + | |
1828 | (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { | |
242f9dcb | 1829 | return BLK_EH_NOT_HANDLED; |
05e9ebbe SP |
1830 | } |
1831 | ||
1832 | instance = cmd->instance; | |
1833 | if (!(instance->flag & MEGASAS_FW_BUSY)) { | |
1834 | /* FW is busy, throttle IO */ | |
1835 | spin_lock_irqsave(instance->host->host_lock, flags); | |
1836 | ||
1837 | instance->host->can_queue = 16; | |
1838 | instance->last_time = jiffies; | |
1839 | instance->flag |= MEGASAS_FW_BUSY; | |
1840 | ||
1841 | spin_unlock_irqrestore(instance->host->host_lock, flags); | |
1842 | } | |
242f9dcb | 1843 | return BLK_EH_RESET_TIMER; |
05e9ebbe SP |
1844 | } |
1845 | ||
c4a3e0a5 BS |
1846 | /** |
1847 | * megasas_reset_device - Device reset handler entry point | |
1848 | */ | |
1849 | static int megasas_reset_device(struct scsi_cmnd *scmd) | |
1850 | { | |
1851 | int ret; | |
1852 | ||
1853 | /* | |
1854 | * First wait for all commands to complete | |
1855 | */ | |
1856 | ret = megasas_generic_reset(scmd); | |
1857 | ||
1858 | return ret; | |
1859 | } | |
1860 | ||
1861 | /** | |
1862 | * megasas_reset_bus_host - Bus & host reset handler entry point | |
1863 | */ | |
1864 | static int megasas_reset_bus_host(struct scsi_cmnd *scmd) | |
1865 | { | |
1866 | int ret; | |
1867 | ||
1868 | /* | |
80682fa9 | 1869 | * First wait for all commands to complete |
c4a3e0a5 BS |
1870 | */ |
1871 | ret = megasas_generic_reset(scmd); | |
1872 | ||
1873 | return ret; | |
1874 | } | |
1875 | ||
cf62a0a5 SP |
1876 | /** |
1877 | * megasas_bios_param - Returns disk geometry for a disk | |
1878 | * @sdev: device handle | |
1879 | * @bdev: block device | |
1880 | * @capacity: drive capacity | |
1881 | * @geom: geometry parameters | |
1882 | */ | |
1883 | static int | |
1884 | megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
1885 | sector_t capacity, int geom[]) | |
1886 | { | |
1887 | int heads; | |
1888 | int sectors; | |
1889 | sector_t cylinders; | |
1890 | unsigned long tmp; | |
1891 | /* Default heads (64) & sectors (32) */ | |
1892 | heads = 64; | |
1893 | sectors = 32; | |
1894 | ||
1895 | tmp = heads * sectors; | |
1896 | cylinders = capacity; | |
1897 | ||
1898 | sector_div(cylinders, tmp); | |
1899 | ||
1900 | /* | |
1901 | * Handle extended translation size for logical drives > 1Gb | |
1902 | */ | |
1903 | ||
1904 | if (capacity >= 0x200000) { | |
1905 | heads = 255; | |
1906 | sectors = 63; | |
1907 | tmp = heads*sectors; | |
1908 | cylinders = capacity; | |
1909 | sector_div(cylinders, tmp); | |
1910 | } | |
1911 | ||
1912 | geom[0] = heads; | |
1913 | geom[1] = sectors; | |
1914 | geom[2] = cylinders; | |
1915 | ||
1916 | return 0; | |
1917 | } | |
1918 | ||
7e8a75f4 YB |
1919 | static void megasas_aen_polling(struct work_struct *work); |
1920 | ||
c4a3e0a5 BS |
1921 | /** |
1922 | * megasas_service_aen - Processes an event notification | |
1923 | * @instance: Adapter soft state | |
1924 | * @cmd: AEN command completed by the ISR | |
1925 | * | |
1926 | * For AEN, driver sends a command down to FW that is held by the FW till an | |
1927 | * event occurs. When an event of interest occurs, FW completes the command | |
1928 | * that it was previously holding. | |
1929 | * | |
1930 | * This routines sends SIGIO signal to processes that have registered with the | |
1931 | * driver for AEN. | |
1932 | */ | |
1933 | static void | |
1934 | megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
1935 | { | |
c3518837 | 1936 | unsigned long flags; |
c4a3e0a5 BS |
1937 | /* |
1938 | * Don't signal app if it is just an aborted previously registered aen | |
1939 | */ | |
c3518837 YB |
1940 | if ((!cmd->abort_aen) && (instance->unload == 0)) { |
1941 | spin_lock_irqsave(&poll_aen_lock, flags); | |
1942 | megasas_poll_wait_aen = 1; | |
1943 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
1944 | wake_up(&megasas_poll_wait); | |
c4a3e0a5 | 1945 | kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); |
c3518837 | 1946 | } |
c4a3e0a5 BS |
1947 | else |
1948 | cmd->abort_aen = 0; | |
1949 | ||
1950 | instance->aen_cmd = NULL; | |
1951 | megasas_return_cmd(instance, cmd); | |
7e8a75f4 | 1952 | |
39a98554 | 1953 | if ((instance->unload == 0) && |
1954 | ((instance->issuepend_done == 1))) { | |
7e8a75f4 YB |
1955 | struct megasas_aen_event *ev; |
1956 | ev = kzalloc(sizeof(*ev), GFP_ATOMIC); | |
1957 | if (!ev) { | |
1958 | printk(KERN_ERR "megasas_service_aen: out of memory\n"); | |
1959 | } else { | |
1960 | ev->instance = instance; | |
1961 | instance->ev = ev; | |
1962 | INIT_WORK(&ev->hotplug_work, megasas_aen_polling); | |
1963 | schedule_delayed_work( | |
1964 | (struct delayed_work *)&ev->hotplug_work, 0); | |
1965 | } | |
1966 | } | |
c4a3e0a5 BS |
1967 | } |
1968 | ||
1969 | /* | |
1970 | * Scsi host template for megaraid_sas driver | |
1971 | */ | |
1972 | static struct scsi_host_template megasas_template = { | |
1973 | ||
1974 | .module = THIS_MODULE, | |
f28cd7cf | 1975 | .name = "LSI SAS based MegaRAID driver", |
c4a3e0a5 | 1976 | .proc_name = "megaraid_sas", |
147aab6a | 1977 | .slave_configure = megasas_slave_configure, |
044833b5 | 1978 | .slave_alloc = megasas_slave_alloc, |
c4a3e0a5 BS |
1979 | .queuecommand = megasas_queue_command, |
1980 | .eh_device_reset_handler = megasas_reset_device, | |
1981 | .eh_bus_reset_handler = megasas_reset_bus_host, | |
1982 | .eh_host_reset_handler = megasas_reset_bus_host, | |
05e9ebbe | 1983 | .eh_timed_out = megasas_reset_timer, |
cf62a0a5 | 1984 | .bios_param = megasas_bios_param, |
c4a3e0a5 BS |
1985 | .use_clustering = ENABLE_CLUSTERING, |
1986 | }; | |
1987 | ||
1988 | /** | |
1989 | * megasas_complete_int_cmd - Completes an internal command | |
1990 | * @instance: Adapter soft state | |
1991 | * @cmd: Command to be completed | |
1992 | * | |
1993 | * The megasas_issue_blocked_cmd() function waits for a command to complete | |
1994 | * after it issues a command. This function wakes up that waiting routine by | |
1995 | * calling wake_up() on the wait queue. | |
1996 | */ | |
1997 | static void | |
1998 | megasas_complete_int_cmd(struct megasas_instance *instance, | |
1999 | struct megasas_cmd *cmd) | |
2000 | { | |
2001 | cmd->cmd_status = cmd->frame->io.cmd_status; | |
2002 | ||
2003 | if (cmd->cmd_status == ENODATA) { | |
2004 | cmd->cmd_status = 0; | |
2005 | } | |
2006 | wake_up(&instance->int_cmd_wait_q); | |
2007 | } | |
2008 | ||
2009 | /** | |
2010 | * megasas_complete_abort - Completes aborting a command | |
2011 | * @instance: Adapter soft state | |
2012 | * @cmd: Cmd that was issued to abort another cmd | |
2013 | * | |
0d49016b | 2014 | * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q |
2015 | * after it issues an abort on a previously issued command. This function | |
c4a3e0a5 BS |
2016 | * wakes up all functions waiting on the same wait queue. |
2017 | */ | |
2018 | static void | |
2019 | megasas_complete_abort(struct megasas_instance *instance, | |
2020 | struct megasas_cmd *cmd) | |
2021 | { | |
2022 | if (cmd->sync_cmd) { | |
2023 | cmd->sync_cmd = 0; | |
2024 | cmd->cmd_status = 0; | |
2025 | wake_up(&instance->abort_cmd_wait_q); | |
2026 | } | |
2027 | ||
2028 | return; | |
2029 | } | |
2030 | ||
c4a3e0a5 BS |
2031 | /** |
2032 | * megasas_complete_cmd - Completes a command | |
2033 | * @instance: Adapter soft state | |
2034 | * @cmd: Command to be completed | |
0d49016b | 2035 | * @alt_status: If non-zero, use this value as status to |
c4a3e0a5 BS |
2036 | * SCSI mid-layer instead of the value returned |
2037 | * by the FW. This should be used if caller wants | |
2038 | * an alternate status (as in the case of aborted | |
2039 | * commands) | |
2040 | */ | |
858119e1 | 2041 | static void |
c4a3e0a5 BS |
2042 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, |
2043 | u8 alt_status) | |
2044 | { | |
2045 | int exception = 0; | |
2046 | struct megasas_header *hdr = &cmd->frame->hdr; | |
c3518837 | 2047 | unsigned long flags; |
c4a3e0a5 | 2048 | |
39a98554 | 2049 | /* flag for the retry reset */ |
2050 | cmd->retry_for_fw_reset = 0; | |
2051 | ||
05e9ebbe SP |
2052 | if (cmd->scmd) |
2053 | cmd->scmd->SCp.ptr = NULL; | |
c4a3e0a5 BS |
2054 | |
2055 | switch (hdr->cmd) { | |
2056 | ||
2057 | case MFI_CMD_PD_SCSI_IO: | |
2058 | case MFI_CMD_LD_SCSI_IO: | |
2059 | ||
2060 | /* | |
2061 | * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been | |
2062 | * issued either through an IO path or an IOCTL path. If it | |
2063 | * was via IOCTL, we will send it to internal completion. | |
2064 | */ | |
2065 | if (cmd->sync_cmd) { | |
2066 | cmd->sync_cmd = 0; | |
2067 | megasas_complete_int_cmd(instance, cmd); | |
2068 | break; | |
2069 | } | |
2070 | ||
c4a3e0a5 BS |
2071 | case MFI_CMD_LD_READ: |
2072 | case MFI_CMD_LD_WRITE: | |
2073 | ||
2074 | if (alt_status) { | |
2075 | cmd->scmd->result = alt_status << 16; | |
2076 | exception = 1; | |
2077 | } | |
2078 | ||
2079 | if (exception) { | |
2080 | ||
e4a082c7 | 2081 | atomic_dec(&instance->fw_outstanding); |
c4a3e0a5 | 2082 | |
155d98f0 | 2083 | scsi_dma_unmap(cmd->scmd); |
c4a3e0a5 BS |
2084 | cmd->scmd->scsi_done(cmd->scmd); |
2085 | megasas_return_cmd(instance, cmd); | |
2086 | ||
2087 | break; | |
2088 | } | |
2089 | ||
2090 | switch (hdr->cmd_status) { | |
2091 | ||
2092 | case MFI_STAT_OK: | |
2093 | cmd->scmd->result = DID_OK << 16; | |
2094 | break; | |
2095 | ||
2096 | case MFI_STAT_SCSI_IO_FAILED: | |
2097 | case MFI_STAT_LD_INIT_IN_PROGRESS: | |
2098 | cmd->scmd->result = | |
2099 | (DID_ERROR << 16) | hdr->scsi_status; | |
2100 | break; | |
2101 | ||
2102 | case MFI_STAT_SCSI_DONE_WITH_ERROR: | |
2103 | ||
2104 | cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; | |
2105 | ||
2106 | if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { | |
2107 | memset(cmd->scmd->sense_buffer, 0, | |
2108 | SCSI_SENSE_BUFFERSIZE); | |
2109 | memcpy(cmd->scmd->sense_buffer, cmd->sense, | |
2110 | hdr->sense_len); | |
2111 | ||
2112 | cmd->scmd->result |= DRIVER_SENSE << 24; | |
2113 | } | |
2114 | ||
2115 | break; | |
2116 | ||
2117 | case MFI_STAT_LD_OFFLINE: | |
2118 | case MFI_STAT_DEVICE_NOT_FOUND: | |
2119 | cmd->scmd->result = DID_BAD_TARGET << 16; | |
2120 | break; | |
2121 | ||
2122 | default: | |
2123 | printk(KERN_DEBUG "megasas: MFI FW status %#x\n", | |
2124 | hdr->cmd_status); | |
2125 | cmd->scmd->result = DID_ERROR << 16; | |
2126 | break; | |
2127 | } | |
2128 | ||
e4a082c7 | 2129 | atomic_dec(&instance->fw_outstanding); |
c4a3e0a5 | 2130 | |
155d98f0 | 2131 | scsi_dma_unmap(cmd->scmd); |
c4a3e0a5 BS |
2132 | cmd->scmd->scsi_done(cmd->scmd); |
2133 | megasas_return_cmd(instance, cmd); | |
2134 | ||
2135 | break; | |
2136 | ||
2137 | case MFI_CMD_SMP: | |
2138 | case MFI_CMD_STP: | |
2139 | case MFI_CMD_DCMD: | |
c3518837 YB |
2140 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || |
2141 | cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { | |
2142 | spin_lock_irqsave(&poll_aen_lock, flags); | |
2143 | megasas_poll_wait_aen = 0; | |
2144 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
2145 | } | |
c4a3e0a5 BS |
2146 | |
2147 | /* | |
2148 | * See if got an event notification | |
2149 | */ | |
2150 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) | |
2151 | megasas_service_aen(instance, cmd); | |
2152 | else | |
2153 | megasas_complete_int_cmd(instance, cmd); | |
2154 | ||
2155 | break; | |
2156 | ||
2157 | case MFI_CMD_ABORT: | |
2158 | /* | |
2159 | * Cmd issued to abort another cmd returned | |
2160 | */ | |
2161 | megasas_complete_abort(instance, cmd); | |
2162 | break; | |
2163 | ||
2164 | default: | |
2165 | printk("megasas: Unknown command completed! [0x%X]\n", | |
2166 | hdr->cmd); | |
2167 | break; | |
2168 | } | |
2169 | } | |
2170 | ||
39a98554 | 2171 | /** |
2172 | * megasas_issue_pending_cmds_again - issue all pending cmds | |
2173 | * in FW again because of the fw reset | |
2174 | * @instance: Adapter soft state | |
2175 | */ | |
2176 | static inline void | |
2177 | megasas_issue_pending_cmds_again(struct megasas_instance *instance) | |
2178 | { | |
2179 | struct megasas_cmd *cmd; | |
2180 | struct list_head clist_local; | |
2181 | union megasas_evt_class_locale class_locale; | |
2182 | unsigned long flags; | |
2183 | u32 seq_num; | |
2184 | ||
2185 | INIT_LIST_HEAD(&clist_local); | |
2186 | spin_lock_irqsave(&instance->hba_lock, flags); | |
2187 | list_splice_init(&instance->internal_reset_pending_q, &clist_local); | |
2188 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
2189 | ||
2190 | while (!list_empty(&clist_local)) { | |
2191 | cmd = list_entry((&clist_local)->next, | |
2192 | struct megasas_cmd, list); | |
2193 | list_del_init(&cmd->list); | |
2194 | ||
2195 | if (cmd->sync_cmd || cmd->scmd) { | |
2196 | printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" | |
2197 | "detected to be pending while HBA reset.\n", | |
2198 | cmd, cmd->scmd, cmd->sync_cmd); | |
2199 | ||
2200 | cmd->retry_for_fw_reset++; | |
2201 | ||
2202 | if (cmd->retry_for_fw_reset == 3) { | |
2203 | printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" | |
2204 | "was tried multiple times during reset." | |
2205 | "Shutting down the HBA\n", | |
2206 | cmd, cmd->scmd, cmd->sync_cmd); | |
2207 | megaraid_sas_kill_hba(instance); | |
2208 | ||
2209 | instance->adprecovery = | |
2210 | MEGASAS_HW_CRITICAL_ERROR; | |
2211 | return; | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | if (cmd->sync_cmd == 1) { | |
2216 | if (cmd->scmd) { | |
2217 | printk(KERN_NOTICE "megaraid_sas: unexpected" | |
2218 | "cmd attached to internal command!\n"); | |
2219 | } | |
2220 | printk(KERN_NOTICE "megasas: %p synchronous cmd" | |
2221 | "on the internal reset queue," | |
2222 | "issue it again.\n", cmd); | |
2223 | cmd->cmd_status = ENODATA; | |
2224 | instance->instancet->fire_cmd(instance, | |
2225 | cmd->frame_phys_addr , | |
2226 | 0, instance->reg_set); | |
2227 | } else if (cmd->scmd) { | |
2228 | printk(KERN_NOTICE "megasas: %p scsi cmd [%02x],%#lx" | |
2229 | "detected on the internal queue, issue again.\n", | |
2230 | cmd, cmd->scmd->cmnd[0], cmd->scmd->serial_number); | |
2231 | ||
2232 | atomic_inc(&instance->fw_outstanding); | |
2233 | instance->instancet->fire_cmd(instance, | |
2234 | cmd->frame_phys_addr, | |
2235 | cmd->frame_count-1, instance->reg_set); | |
2236 | } else { | |
2237 | printk(KERN_NOTICE "megasas: %p unexpected cmd on the" | |
2238 | "internal reset defer list while re-issue!!\n", | |
2239 | cmd); | |
2240 | } | |
2241 | } | |
2242 | ||
2243 | if (instance->aen_cmd) { | |
2244 | printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); | |
2245 | megasas_return_cmd(instance, instance->aen_cmd); | |
2246 | ||
2247 | instance->aen_cmd = NULL; | |
2248 | } | |
2249 | ||
2250 | /* | |
2251 | * Initiate AEN (Asynchronous Event Notification) | |
2252 | */ | |
2253 | seq_num = instance->last_seq_num; | |
2254 | class_locale.members.reserved = 0; | |
2255 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
2256 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
2257 | ||
2258 | megasas_register_aen(instance, seq_num, class_locale.word); | |
2259 | } | |
2260 | ||
2261 | /** | |
2262 | * Move the internal reset pending commands to a deferred queue. | |
2263 | * | |
2264 | * We move the commands pending at internal reset time to a | |
2265 | * pending queue. This queue would be flushed after successful | |
2266 | * completion of the internal reset sequence. if the internal reset | |
2267 | * did not complete in time, the kernel reset handler would flush | |
2268 | * these commands. | |
2269 | **/ | |
2270 | static void | |
2271 | megasas_internal_reset_defer_cmds(struct megasas_instance *instance) | |
2272 | { | |
2273 | struct megasas_cmd *cmd; | |
2274 | int i; | |
2275 | u32 max_cmd = instance->max_fw_cmds; | |
2276 | u32 defer_index; | |
2277 | unsigned long flags; | |
2278 | ||
2279 | defer_index = 0; | |
2280 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
2281 | for (i = 0; i < max_cmd; i++) { | |
2282 | cmd = instance->cmd_list[i]; | |
2283 | if (cmd->sync_cmd == 1 || cmd->scmd) { | |
2284 | printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" | |
2285 | "on the defer queue as internal\n", | |
2286 | defer_index, cmd, cmd->sync_cmd, cmd->scmd); | |
2287 | ||
2288 | if (!list_empty(&cmd->list)) { | |
2289 | printk(KERN_NOTICE "megaraid_sas: ERROR while" | |
2290 | " moving this cmd:%p, %d %p, it was" | |
2291 | "discovered on some list?\n", | |
2292 | cmd, cmd->sync_cmd, cmd->scmd); | |
2293 | ||
2294 | list_del_init(&cmd->list); | |
2295 | } | |
2296 | defer_index++; | |
2297 | list_add_tail(&cmd->list, | |
2298 | &instance->internal_reset_pending_q); | |
2299 | } | |
2300 | } | |
2301 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
2302 | } | |
2303 | ||
2304 | ||
2305 | static void | |
2306 | process_fw_state_change_wq(struct work_struct *work) | |
2307 | { | |
2308 | struct megasas_instance *instance = | |
2309 | container_of(work, struct megasas_instance, work_init); | |
2310 | u32 wait; | |
2311 | unsigned long flags; | |
2312 | ||
2313 | if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { | |
2314 | printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", | |
2315 | instance->adprecovery); | |
2316 | return ; | |
2317 | } | |
2318 | ||
2319 | if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { | |
2320 | printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" | |
2321 | "state, restarting it...\n"); | |
2322 | ||
2323 | instance->instancet->disable_intr(instance->reg_set); | |
2324 | atomic_set(&instance->fw_outstanding, 0); | |
2325 | ||
2326 | atomic_set(&instance->fw_reset_no_pci_access, 1); | |
2327 | instance->instancet->adp_reset(instance, instance->reg_set); | |
2328 | atomic_set(&instance->fw_reset_no_pci_access, 0 ); | |
2329 | ||
2330 | printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," | |
2331 | "initiating next stage...\n"); | |
2332 | ||
2333 | printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," | |
2334 | "state 2 starting...\n"); | |
2335 | ||
2336 | /*waitting for about 20 second before start the second init*/ | |
2337 | for (wait = 0; wait < 30; wait++) { | |
2338 | msleep(1000); | |
2339 | } | |
2340 | ||
2341 | if (megasas_transition_to_ready(instance)) { | |
2342 | printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); | |
2343 | ||
2344 | megaraid_sas_kill_hba(instance); | |
2345 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; | |
2346 | return ; | |
2347 | } | |
2348 | ||
2349 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || | |
2350 | (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || | |
2351 | (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) | |
2352 | ) { | |
2353 | *instance->consumer = *instance->producer; | |
2354 | } else { | |
2355 | *instance->consumer = 0; | |
2356 | *instance->producer = 0; | |
2357 | } | |
2358 | ||
2359 | megasas_issue_init_mfi(instance); | |
2360 | ||
2361 | spin_lock_irqsave(&instance->hba_lock, flags); | |
2362 | instance->adprecovery = MEGASAS_HBA_OPERATIONAL; | |
2363 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
2364 | instance->instancet->enable_intr(instance->reg_set); | |
2365 | ||
2366 | megasas_issue_pending_cmds_again(instance); | |
2367 | instance->issuepend_done = 1; | |
2368 | } | |
2369 | return ; | |
2370 | } | |
2371 | ||
c4a3e0a5 BS |
2372 | /** |
2373 | * megasas_deplete_reply_queue - Processes all completed commands | |
2374 | * @instance: Adapter soft state | |
2375 | * @alt_status: Alternate status to be returned to | |
2376 | * SCSI mid-layer instead of the status | |
2377 | * returned by the FW | |
39a98554 | 2378 | * Note: this must be called with hba lock held |
c4a3e0a5 | 2379 | */ |
858119e1 | 2380 | static int |
39a98554 | 2381 | megasas_deplete_reply_queue(struct megasas_instance *instance, |
2382 | u8 alt_status) | |
c4a3e0a5 | 2383 | { |
39a98554 | 2384 | u32 mfiStatus; |
2385 | u32 fw_state; | |
2386 | ||
2387 | if ((mfiStatus = instance->instancet->check_reset(instance, | |
2388 | instance->reg_set)) == 1) { | |
2389 | return IRQ_HANDLED; | |
2390 | } | |
2391 | ||
2392 | if ((mfiStatus = instance->instancet->clear_intr( | |
2393 | instance->reg_set) | |
2394 | ) == 0) { | |
c4a3e0a5 | 2395 | return IRQ_NONE; |
39a98554 | 2396 | } |
2397 | ||
2398 | instance->mfiStatus = mfiStatus; | |
2399 | ||
2400 | if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { | |
2401 | fw_state = instance->instancet->read_fw_status_reg( | |
2402 | instance->reg_set) & MFI_STATE_MASK; | |
2403 | ||
2404 | if (fw_state != MFI_STATE_FAULT) { | |
2405 | printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", | |
2406 | fw_state); | |
2407 | } | |
2408 | ||
2409 | if ((fw_state == MFI_STATE_FAULT) && | |
2410 | (instance->disableOnlineCtrlReset == 0)) { | |
2411 | printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); | |
2412 | ||
2413 | if ((instance->pdev->device == | |
2414 | PCI_DEVICE_ID_LSI_SAS1064R) || | |
2415 | (instance->pdev->device == | |
2416 | PCI_DEVICE_ID_DELL_PERC5) || | |
2417 | (instance->pdev->device == | |
2418 | PCI_DEVICE_ID_LSI_VERDE_ZCR)) { | |
2419 | ||
2420 | *instance->consumer = | |
2421 | MEGASAS_ADPRESET_INPROG_SIGN; | |
2422 | } | |
2423 | ||
2424 | ||
2425 | instance->instancet->disable_intr(instance->reg_set); | |
2426 | instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; | |
2427 | instance->issuepend_done = 0; | |
2428 | ||
2429 | atomic_set(&instance->fw_outstanding, 0); | |
2430 | megasas_internal_reset_defer_cmds(instance); | |
2431 | ||
2432 | printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", | |
2433 | fw_state, instance->adprecovery); | |
2434 | ||
2435 | schedule_work(&instance->work_init); | |
2436 | return IRQ_HANDLED; | |
2437 | ||
2438 | } else { | |
2439 | printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", | |
2440 | fw_state, instance->disableOnlineCtrlReset); | |
2441 | } | |
2442 | } | |
c4a3e0a5 | 2443 | |
5d018ad0 | 2444 | tasklet_schedule(&instance->isr_tasklet); |
c4a3e0a5 BS |
2445 | return IRQ_HANDLED; |
2446 | } | |
c4a3e0a5 BS |
2447 | /** |
2448 | * megasas_isr - isr entry point | |
2449 | */ | |
7d12e780 | 2450 | static irqreturn_t megasas_isr(int irq, void *devp) |
c4a3e0a5 | 2451 | { |
39a98554 | 2452 | struct megasas_instance *instance; |
2453 | unsigned long flags; | |
2454 | irqreturn_t rc; | |
2455 | ||
2456 | if (atomic_read( | |
2457 | &(((struct megasas_instance *)devp)->fw_reset_no_pci_access))) | |
2458 | return IRQ_HANDLED; | |
2459 | ||
2460 | instance = (struct megasas_instance *)devp; | |
2461 | ||
2462 | spin_lock_irqsave(&instance->hba_lock, flags); | |
2463 | rc = megasas_deplete_reply_queue(instance, DID_OK); | |
2464 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
2465 | ||
2466 | return rc; | |
c4a3e0a5 BS |
2467 | } |
2468 | ||
2469 | /** | |
2470 | * megasas_transition_to_ready - Move the FW to READY state | |
1341c939 | 2471 | * @instance: Adapter soft state |
c4a3e0a5 BS |
2472 | * |
2473 | * During the initialization, FW passes can potentially be in any one of | |
2474 | * several possible states. If the FW in operational, waiting-for-handshake | |
2475 | * states, driver must take steps to bring it to ready state. Otherwise, it | |
2476 | * has to wait for the ready state. | |
2477 | */ | |
2478 | static int | |
1341c939 | 2479 | megasas_transition_to_ready(struct megasas_instance* instance) |
c4a3e0a5 BS |
2480 | { |
2481 | int i; | |
2482 | u8 max_wait; | |
2483 | u32 fw_state; | |
2484 | u32 cur_state; | |
7218df69 | 2485 | u32 abs_state, curr_abs_state; |
c4a3e0a5 | 2486 | |
1341c939 | 2487 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; |
c4a3e0a5 | 2488 | |
e3bbff9f | 2489 | if (fw_state != MFI_STATE_READY) |
0d49016b | 2490 | printk(KERN_INFO "megasas: Waiting for FW to come to ready" |
2491 | " state\n"); | |
e3bbff9f | 2492 | |
c4a3e0a5 BS |
2493 | while (fw_state != MFI_STATE_READY) { |
2494 | ||
7218df69 YB |
2495 | abs_state = |
2496 | instance->instancet->read_fw_status_reg(instance->reg_set); | |
2497 | ||
c4a3e0a5 BS |
2498 | switch (fw_state) { |
2499 | ||
2500 | case MFI_STATE_FAULT: | |
2501 | ||
2502 | printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); | |
2503 | return -ENODEV; | |
2504 | ||
2505 | case MFI_STATE_WAIT_HANDSHAKE: | |
2506 | /* | |
2507 | * Set the CLR bit in inbound doorbell | |
2508 | */ | |
0c79e681 | 2509 | if ((instance->pdev->device == |
87911122 YB |
2510 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
2511 | (instance->pdev->device == | |
2512 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
2513 | ||
2514 | writel( | |
2515 | MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, | |
2516 | &instance->reg_set->reserved_0[0]); | |
2517 | } else { | |
2518 | writel( | |
2519 | MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, | |
2520 | &instance->reg_set->inbound_doorbell); | |
2521 | } | |
c4a3e0a5 | 2522 | |
7218df69 | 2523 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2524 | cur_state = MFI_STATE_WAIT_HANDSHAKE; |
2525 | break; | |
2526 | ||
e3bbff9f | 2527 | case MFI_STATE_BOOT_MESSAGE_PENDING: |
87911122 YB |
2528 | if ((instance->pdev->device == |
2529 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
2530 | (instance->pdev->device == | |
2531 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
2532 | writel(MFI_INIT_HOTPLUG, | |
2533 | &instance->reg_set->reserved_0[0]); | |
2534 | } else | |
2535 | writel(MFI_INIT_HOTPLUG, | |
2536 | &instance->reg_set->inbound_doorbell); | |
e3bbff9f | 2537 | |
7218df69 | 2538 | max_wait = MEGASAS_RESET_WAIT_TIME; |
e3bbff9f SP |
2539 | cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; |
2540 | break; | |
2541 | ||
c4a3e0a5 BS |
2542 | case MFI_STATE_OPERATIONAL: |
2543 | /* | |
e3bbff9f | 2544 | * Bring it to READY state; assuming max wait 10 secs |
c4a3e0a5 | 2545 | */ |
b274cab7 | 2546 | instance->instancet->disable_intr(instance->reg_set); |
87911122 YB |
2547 | if ((instance->pdev->device == |
2548 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
2549 | (instance->pdev->device == | |
2550 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
2551 | writel(MFI_RESET_FLAGS, | |
2552 | &instance->reg_set->reserved_0[0]); | |
2553 | } else | |
2554 | writel(MFI_RESET_FLAGS, | |
2555 | &instance->reg_set->inbound_doorbell); | |
c4a3e0a5 | 2556 | |
7218df69 | 2557 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2558 | cur_state = MFI_STATE_OPERATIONAL; |
2559 | break; | |
2560 | ||
2561 | case MFI_STATE_UNDEFINED: | |
2562 | /* | |
2563 | * This state should not last for more than 2 seconds | |
2564 | */ | |
7218df69 | 2565 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2566 | cur_state = MFI_STATE_UNDEFINED; |
2567 | break; | |
2568 | ||
2569 | case MFI_STATE_BB_INIT: | |
7218df69 | 2570 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2571 | cur_state = MFI_STATE_BB_INIT; |
2572 | break; | |
2573 | ||
2574 | case MFI_STATE_FW_INIT: | |
7218df69 | 2575 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2576 | cur_state = MFI_STATE_FW_INIT; |
2577 | break; | |
2578 | ||
2579 | case MFI_STATE_FW_INIT_2: | |
7218df69 | 2580 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2581 | cur_state = MFI_STATE_FW_INIT_2; |
2582 | break; | |
2583 | ||
2584 | case MFI_STATE_DEVICE_SCAN: | |
7218df69 | 2585 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2586 | cur_state = MFI_STATE_DEVICE_SCAN; |
2587 | break; | |
2588 | ||
2589 | case MFI_STATE_FLUSH_CACHE: | |
7218df69 | 2590 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2591 | cur_state = MFI_STATE_FLUSH_CACHE; |
2592 | break; | |
2593 | ||
2594 | default: | |
2595 | printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", | |
2596 | fw_state); | |
2597 | return -ENODEV; | |
2598 | } | |
2599 | ||
2600 | /* | |
2601 | * The cur_state should not last for more than max_wait secs | |
2602 | */ | |
2603 | for (i = 0; i < (max_wait * 1000); i++) { | |
0d49016b | 2604 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & |
1341c939 | 2605 | MFI_STATE_MASK ; |
7218df69 YB |
2606 | curr_abs_state = |
2607 | instance->instancet->read_fw_status_reg(instance->reg_set); | |
c4a3e0a5 | 2608 | |
7218df69 | 2609 | if (abs_state == curr_abs_state) { |
c4a3e0a5 BS |
2610 | msleep(1); |
2611 | } else | |
2612 | break; | |
2613 | } | |
2614 | ||
2615 | /* | |
2616 | * Return error if fw_state hasn't changed after max_wait | |
2617 | */ | |
7218df69 | 2618 | if (curr_abs_state == abs_state) { |
c4a3e0a5 BS |
2619 | printk(KERN_DEBUG "FW state [%d] hasn't changed " |
2620 | "in %d secs\n", fw_state, max_wait); | |
2621 | return -ENODEV; | |
2622 | } | |
39a98554 | 2623 | } |
0d49016b | 2624 | printk(KERN_INFO "megasas: FW now in Ready state\n"); |
c4a3e0a5 BS |
2625 | |
2626 | return 0; | |
2627 | } | |
2628 | ||
2629 | /** | |
2630 | * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool | |
2631 | * @instance: Adapter soft state | |
2632 | */ | |
2633 | static void megasas_teardown_frame_pool(struct megasas_instance *instance) | |
2634 | { | |
2635 | int i; | |
2636 | u32 max_cmd = instance->max_fw_cmds; | |
2637 | struct megasas_cmd *cmd; | |
2638 | ||
2639 | if (!instance->frame_dma_pool) | |
2640 | return; | |
2641 | ||
2642 | /* | |
2643 | * Return all frames to pool | |
2644 | */ | |
2645 | for (i = 0; i < max_cmd; i++) { | |
2646 | ||
2647 | cmd = instance->cmd_list[i]; | |
2648 | ||
2649 | if (cmd->frame) | |
2650 | pci_pool_free(instance->frame_dma_pool, cmd->frame, | |
2651 | cmd->frame_phys_addr); | |
2652 | ||
2653 | if (cmd->sense) | |
e3bbff9f | 2654 | pci_pool_free(instance->sense_dma_pool, cmd->sense, |
c4a3e0a5 BS |
2655 | cmd->sense_phys_addr); |
2656 | } | |
2657 | ||
2658 | /* | |
2659 | * Now destroy the pool itself | |
2660 | */ | |
2661 | pci_pool_destroy(instance->frame_dma_pool); | |
2662 | pci_pool_destroy(instance->sense_dma_pool); | |
2663 | ||
2664 | instance->frame_dma_pool = NULL; | |
2665 | instance->sense_dma_pool = NULL; | |
2666 | } | |
2667 | ||
2668 | /** | |
2669 | * megasas_create_frame_pool - Creates DMA pool for cmd frames | |
2670 | * @instance: Adapter soft state | |
2671 | * | |
2672 | * Each command packet has an embedded DMA memory buffer that is used for | |
2673 | * filling MFI frame and the SG list that immediately follows the frame. This | |
2674 | * function creates those DMA memory buffers for each command packet by using | |
2675 | * PCI pool facility. | |
2676 | */ | |
2677 | static int megasas_create_frame_pool(struct megasas_instance *instance) | |
2678 | { | |
2679 | int i; | |
2680 | u32 max_cmd; | |
2681 | u32 sge_sz; | |
2682 | u32 sgl_sz; | |
2683 | u32 total_sz; | |
2684 | u32 frame_count; | |
2685 | struct megasas_cmd *cmd; | |
2686 | ||
2687 | max_cmd = instance->max_fw_cmds; | |
2688 | ||
2689 | /* | |
2690 | * Size of our frame is 64 bytes for MFI frame, followed by max SG | |
2691 | * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer | |
2692 | */ | |
2693 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : | |
2694 | sizeof(struct megasas_sge32); | |
2695 | ||
f4c9a131 YB |
2696 | if (instance->flag_ieee) { |
2697 | sge_sz = sizeof(struct megasas_sge_skinny); | |
2698 | } | |
2699 | ||
c4a3e0a5 BS |
2700 | /* |
2701 | * Calculated the number of 64byte frames required for SGL | |
2702 | */ | |
2703 | sgl_sz = sge_sz * instance->max_num_sge; | |
2704 | frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; | |
39a98554 | 2705 | frame_count = 15; |
c4a3e0a5 BS |
2706 | |
2707 | /* | |
2708 | * We need one extra frame for the MFI command | |
2709 | */ | |
2710 | frame_count++; | |
2711 | ||
2712 | total_sz = MEGAMFI_FRAME_SIZE * frame_count; | |
2713 | /* | |
2714 | * Use DMA pool facility provided by PCI layer | |
2715 | */ | |
2716 | instance->frame_dma_pool = pci_pool_create("megasas frame pool", | |
2717 | instance->pdev, total_sz, 64, | |
2718 | 0); | |
2719 | ||
2720 | if (!instance->frame_dma_pool) { | |
2721 | printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); | |
2722 | return -ENOMEM; | |
2723 | } | |
2724 | ||
2725 | instance->sense_dma_pool = pci_pool_create("megasas sense pool", | |
2726 | instance->pdev, 128, 4, 0); | |
2727 | ||
2728 | if (!instance->sense_dma_pool) { | |
2729 | printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); | |
2730 | ||
2731 | pci_pool_destroy(instance->frame_dma_pool); | |
2732 | instance->frame_dma_pool = NULL; | |
2733 | ||
2734 | return -ENOMEM; | |
2735 | } | |
2736 | ||
2737 | /* | |
2738 | * Allocate and attach a frame to each of the commands in cmd_list. | |
2739 | * By making cmd->index as the context instead of the &cmd, we can | |
2740 | * always use 32bit context regardless of the architecture | |
2741 | */ | |
2742 | for (i = 0; i < max_cmd; i++) { | |
2743 | ||
2744 | cmd = instance->cmd_list[i]; | |
2745 | ||
2746 | cmd->frame = pci_pool_alloc(instance->frame_dma_pool, | |
2747 | GFP_KERNEL, &cmd->frame_phys_addr); | |
2748 | ||
2749 | cmd->sense = pci_pool_alloc(instance->sense_dma_pool, | |
2750 | GFP_KERNEL, &cmd->sense_phys_addr); | |
2751 | ||
2752 | /* | |
2753 | * megasas_teardown_frame_pool() takes care of freeing | |
2754 | * whatever has been allocated | |
2755 | */ | |
2756 | if (!cmd->frame || !cmd->sense) { | |
2757 | printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); | |
2758 | megasas_teardown_frame_pool(instance); | |
2759 | return -ENOMEM; | |
2760 | } | |
2761 | ||
707e09bd | 2762 | memset(cmd->frame, 0, total_sz); |
c4a3e0a5 | 2763 | cmd->frame->io.context = cmd->index; |
7e8a75f4 | 2764 | cmd->frame->io.pad_0 = 0; |
c4a3e0a5 BS |
2765 | } |
2766 | ||
2767 | return 0; | |
2768 | } | |
2769 | ||
2770 | /** | |
2771 | * megasas_free_cmds - Free all the cmds in the free cmd pool | |
2772 | * @instance: Adapter soft state | |
2773 | */ | |
2774 | static void megasas_free_cmds(struct megasas_instance *instance) | |
2775 | { | |
2776 | int i; | |
2777 | /* First free the MFI frame pool */ | |
2778 | megasas_teardown_frame_pool(instance); | |
2779 | ||
2780 | /* Free all the commands in the cmd_list */ | |
2781 | for (i = 0; i < instance->max_fw_cmds; i++) | |
2782 | kfree(instance->cmd_list[i]); | |
2783 | ||
2784 | /* Free the cmd_list buffer itself */ | |
2785 | kfree(instance->cmd_list); | |
2786 | instance->cmd_list = NULL; | |
2787 | ||
2788 | INIT_LIST_HEAD(&instance->cmd_pool); | |
2789 | } | |
2790 | ||
2791 | /** | |
2792 | * megasas_alloc_cmds - Allocates the command packets | |
2793 | * @instance: Adapter soft state | |
2794 | * | |
2795 | * Each command that is issued to the FW, whether IO commands from the OS or | |
2796 | * internal commands like IOCTLs, are wrapped in local data structure called | |
2797 | * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to | |
2798 | * the FW. | |
2799 | * | |
2800 | * Each frame has a 32-bit field called context (tag). This context is used | |
2801 | * to get back the megasas_cmd from the frame when a frame gets completed in | |
2802 | * the ISR. Typically the address of the megasas_cmd itself would be used as | |
2803 | * the context. But we wanted to keep the differences between 32 and 64 bit | |
2804 | * systems to the mininum. We always use 32 bit integers for the context. In | |
2805 | * this driver, the 32 bit values are the indices into an array cmd_list. | |
2806 | * This array is used only to look up the megasas_cmd given the context. The | |
2807 | * free commands themselves are maintained in a linked list called cmd_pool. | |
2808 | */ | |
2809 | static int megasas_alloc_cmds(struct megasas_instance *instance) | |
2810 | { | |
2811 | int i; | |
2812 | int j; | |
2813 | u32 max_cmd; | |
2814 | struct megasas_cmd *cmd; | |
2815 | ||
2816 | max_cmd = instance->max_fw_cmds; | |
2817 | ||
2818 | /* | |
2819 | * instance->cmd_list is an array of struct megasas_cmd pointers. | |
2820 | * Allocate the dynamic array first and then allocate individual | |
2821 | * commands. | |
2822 | */ | |
dd00cc48 | 2823 | instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); |
c4a3e0a5 BS |
2824 | |
2825 | if (!instance->cmd_list) { | |
2826 | printk(KERN_DEBUG "megasas: out of memory\n"); | |
2827 | return -ENOMEM; | |
2828 | } | |
2829 | ||
c4a3e0a5 BS |
2830 | |
2831 | for (i = 0; i < max_cmd; i++) { | |
2832 | instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), | |
2833 | GFP_KERNEL); | |
2834 | ||
2835 | if (!instance->cmd_list[i]) { | |
2836 | ||
2837 | for (j = 0; j < i; j++) | |
2838 | kfree(instance->cmd_list[j]); | |
2839 | ||
2840 | kfree(instance->cmd_list); | |
2841 | instance->cmd_list = NULL; | |
2842 | ||
2843 | return -ENOMEM; | |
2844 | } | |
2845 | } | |
2846 | ||
2847 | /* | |
2848 | * Add all the commands to command pool (instance->cmd_pool) | |
2849 | */ | |
2850 | for (i = 0; i < max_cmd; i++) { | |
2851 | cmd = instance->cmd_list[i]; | |
2852 | memset(cmd, 0, sizeof(struct megasas_cmd)); | |
2853 | cmd->index = i; | |
39a98554 | 2854 | cmd->scmd = NULL; |
c4a3e0a5 BS |
2855 | cmd->instance = instance; |
2856 | ||
2857 | list_add_tail(&cmd->list, &instance->cmd_pool); | |
2858 | } | |
2859 | ||
2860 | /* | |
2861 | * Create a frame pool and assign one frame to each cmd | |
2862 | */ | |
2863 | if (megasas_create_frame_pool(instance)) { | |
2864 | printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); | |
2865 | megasas_free_cmds(instance); | |
2866 | } | |
2867 | ||
2868 | return 0; | |
2869 | } | |
2870 | ||
81e403ce YB |
2871 | /* |
2872 | * megasas_get_pd_list_info - Returns FW's pd_list structure | |
2873 | * @instance: Adapter soft state | |
2874 | * @pd_list: pd_list structure | |
2875 | * | |
2876 | * Issues an internal command (DCMD) to get the FW's controller PD | |
2877 | * list structure. This information is mainly used to find out SYSTEM | |
2878 | * supported by the FW. | |
2879 | */ | |
2880 | static int | |
2881 | megasas_get_pd_list(struct megasas_instance *instance) | |
2882 | { | |
2883 | int ret = 0, pd_index = 0; | |
2884 | struct megasas_cmd *cmd; | |
2885 | struct megasas_dcmd_frame *dcmd; | |
2886 | struct MR_PD_LIST *ci; | |
2887 | struct MR_PD_ADDRESS *pd_addr; | |
2888 | dma_addr_t ci_h = 0; | |
2889 | ||
2890 | cmd = megasas_get_cmd(instance); | |
2891 | ||
2892 | if (!cmd) { | |
2893 | printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); | |
2894 | return -ENOMEM; | |
2895 | } | |
2896 | ||
2897 | dcmd = &cmd->frame->dcmd; | |
2898 | ||
2899 | ci = pci_alloc_consistent(instance->pdev, | |
2900 | MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); | |
2901 | ||
2902 | if (!ci) { | |
2903 | printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); | |
2904 | megasas_return_cmd(instance, cmd); | |
2905 | return -ENOMEM; | |
2906 | } | |
2907 | ||
2908 | memset(ci, 0, sizeof(*ci)); | |
2909 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
2910 | ||
2911 | dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; | |
2912 | dcmd->mbox.b[1] = 0; | |
2913 | dcmd->cmd = MFI_CMD_DCMD; | |
2914 | dcmd->cmd_status = 0xFF; | |
2915 | dcmd->sge_count = 1; | |
2916 | dcmd->flags = MFI_FRAME_DIR_READ; | |
2917 | dcmd->timeout = 0; | |
780a3762 | 2918 | dcmd->pad_0 = 0; |
81e403ce YB |
2919 | dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); |
2920 | dcmd->opcode = MR_DCMD_PD_LIST_QUERY; | |
2921 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
2922 | dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); | |
2923 | ||
2924 | if (!megasas_issue_polled(instance, cmd)) { | |
2925 | ret = 0; | |
2926 | } else { | |
2927 | ret = -1; | |
2928 | } | |
2929 | ||
2930 | /* | |
2931 | * the following function will get the instance PD LIST. | |
2932 | */ | |
2933 | ||
2934 | pd_addr = ci->addr; | |
2935 | ||
2936 | if ( ret == 0 && | |
2937 | (ci->count < | |
2938 | (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { | |
2939 | ||
2940 | memset(instance->pd_list, 0, | |
2941 | MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); | |
2942 | ||
2943 | for (pd_index = 0; pd_index < ci->count; pd_index++) { | |
2944 | ||
2945 | instance->pd_list[pd_addr->deviceId].tid = | |
2946 | pd_addr->deviceId; | |
2947 | instance->pd_list[pd_addr->deviceId].driveType = | |
2948 | pd_addr->scsiDevType; | |
2949 | instance->pd_list[pd_addr->deviceId].driveState = | |
2950 | MR_PD_STATE_SYSTEM; | |
2951 | pd_addr++; | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | pci_free_consistent(instance->pdev, | |
2956 | MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), | |
2957 | ci, ci_h); | |
2958 | megasas_return_cmd(instance, cmd); | |
2959 | ||
2960 | return ret; | |
2961 | } | |
2962 | ||
bdc6fb8d YB |
2963 | /* |
2964 | * megasas_get_ld_list_info - Returns FW's ld_list structure | |
2965 | * @instance: Adapter soft state | |
2966 | * @ld_list: ld_list structure | |
2967 | * | |
2968 | * Issues an internal command (DCMD) to get the FW's controller PD | |
2969 | * list structure. This information is mainly used to find out SYSTEM | |
2970 | * supported by the FW. | |
2971 | */ | |
2972 | static int | |
2973 | megasas_get_ld_list(struct megasas_instance *instance) | |
2974 | { | |
2975 | int ret = 0, ld_index = 0, ids = 0; | |
2976 | struct megasas_cmd *cmd; | |
2977 | struct megasas_dcmd_frame *dcmd; | |
2978 | struct MR_LD_LIST *ci; | |
2979 | dma_addr_t ci_h = 0; | |
2980 | ||
2981 | cmd = megasas_get_cmd(instance); | |
2982 | ||
2983 | if (!cmd) { | |
2984 | printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); | |
2985 | return -ENOMEM; | |
2986 | } | |
2987 | ||
2988 | dcmd = &cmd->frame->dcmd; | |
2989 | ||
2990 | ci = pci_alloc_consistent(instance->pdev, | |
2991 | sizeof(struct MR_LD_LIST), | |
2992 | &ci_h); | |
2993 | ||
2994 | if (!ci) { | |
2995 | printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); | |
2996 | megasas_return_cmd(instance, cmd); | |
2997 | return -ENOMEM; | |
2998 | } | |
2999 | ||
3000 | memset(ci, 0, sizeof(*ci)); | |
3001 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3002 | ||
3003 | dcmd->cmd = MFI_CMD_DCMD; | |
3004 | dcmd->cmd_status = 0xFF; | |
3005 | dcmd->sge_count = 1; | |
3006 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3007 | dcmd->timeout = 0; | |
3008 | dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); | |
3009 | dcmd->opcode = MR_DCMD_LD_GET_LIST; | |
3010 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
3011 | dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); | |
3012 | dcmd->pad_0 = 0; | |
3013 | ||
3014 | if (!megasas_issue_polled(instance, cmd)) { | |
3015 | ret = 0; | |
3016 | } else { | |
3017 | ret = -1; | |
3018 | } | |
3019 | ||
3020 | /* the following function will get the instance PD LIST */ | |
3021 | ||
39a98554 | 3022 | if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) { |
bdc6fb8d YB |
3023 | memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); |
3024 | ||
3025 | for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { | |
3026 | if (ci->ldList[ld_index].state != 0) { | |
3027 | ids = ci->ldList[ld_index].ref.targetId; | |
3028 | instance->ld_ids[ids] = | |
3029 | ci->ldList[ld_index].ref.targetId; | |
3030 | } | |
3031 | } | |
3032 | } | |
3033 | ||
3034 | pci_free_consistent(instance->pdev, | |
3035 | sizeof(struct MR_LD_LIST), | |
3036 | ci, | |
3037 | ci_h); | |
3038 | ||
3039 | megasas_return_cmd(instance, cmd); | |
3040 | return ret; | |
3041 | } | |
3042 | ||
c4a3e0a5 BS |
3043 | /** |
3044 | * megasas_get_controller_info - Returns FW's controller structure | |
3045 | * @instance: Adapter soft state | |
3046 | * @ctrl_info: Controller information structure | |
3047 | * | |
3048 | * Issues an internal command (DCMD) to get the FW's controller structure. | |
3049 | * This information is mainly used to find out the maximum IO transfer per | |
3050 | * command supported by the FW. | |
3051 | */ | |
3052 | static int | |
3053 | megasas_get_ctrl_info(struct megasas_instance *instance, | |
3054 | struct megasas_ctrl_info *ctrl_info) | |
3055 | { | |
3056 | int ret = 0; | |
3057 | struct megasas_cmd *cmd; | |
3058 | struct megasas_dcmd_frame *dcmd; | |
3059 | struct megasas_ctrl_info *ci; | |
3060 | dma_addr_t ci_h = 0; | |
3061 | ||
3062 | cmd = megasas_get_cmd(instance); | |
3063 | ||
3064 | if (!cmd) { | |
3065 | printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); | |
3066 | return -ENOMEM; | |
3067 | } | |
3068 | ||
3069 | dcmd = &cmd->frame->dcmd; | |
3070 | ||
3071 | ci = pci_alloc_consistent(instance->pdev, | |
3072 | sizeof(struct megasas_ctrl_info), &ci_h); | |
3073 | ||
3074 | if (!ci) { | |
3075 | printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); | |
3076 | megasas_return_cmd(instance, cmd); | |
3077 | return -ENOMEM; | |
3078 | } | |
3079 | ||
3080 | memset(ci, 0, sizeof(*ci)); | |
3081 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3082 | ||
3083 | dcmd->cmd = MFI_CMD_DCMD; | |
3084 | dcmd->cmd_status = 0xFF; | |
3085 | dcmd->sge_count = 1; | |
3086 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3087 | dcmd->timeout = 0; | |
780a3762 | 3088 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
3089 | dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); |
3090 | dcmd->opcode = MR_DCMD_CTRL_GET_INFO; | |
3091 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
3092 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); | |
3093 | ||
3094 | if (!megasas_issue_polled(instance, cmd)) { | |
3095 | ret = 0; | |
3096 | memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); | |
3097 | } else { | |
3098 | ret = -1; | |
3099 | } | |
3100 | ||
3101 | pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), | |
3102 | ci, ci_h); | |
3103 | ||
3104 | megasas_return_cmd(instance, cmd); | |
3105 | return ret; | |
3106 | } | |
3107 | ||
31ea7088 | 3108 | /** |
3109 | * megasas_issue_init_mfi - Initializes the FW | |
3110 | * @instance: Adapter soft state | |
3111 | * | |
3112 | * Issues the INIT MFI cmd | |
3113 | */ | |
3114 | static int | |
3115 | megasas_issue_init_mfi(struct megasas_instance *instance) | |
3116 | { | |
3117 | u32 context; | |
3118 | ||
3119 | struct megasas_cmd *cmd; | |
3120 | ||
3121 | struct megasas_init_frame *init_frame; | |
3122 | struct megasas_init_queue_info *initq_info; | |
3123 | dma_addr_t init_frame_h; | |
3124 | dma_addr_t initq_info_h; | |
3125 | ||
3126 | /* | |
3127 | * Prepare a init frame. Note the init frame points to queue info | |
3128 | * structure. Each frame has SGL allocated after first 64 bytes. For | |
3129 | * this frame - since we don't need any SGL - we use SGL's space as | |
3130 | * queue info structure | |
3131 | * | |
3132 | * We will not get a NULL command below. We just created the pool. | |
3133 | */ | |
3134 | cmd = megasas_get_cmd(instance); | |
3135 | ||
3136 | init_frame = (struct megasas_init_frame *)cmd->frame; | |
3137 | initq_info = (struct megasas_init_queue_info *) | |
3138 | ((unsigned long)init_frame + 64); | |
3139 | ||
3140 | init_frame_h = cmd->frame_phys_addr; | |
3141 | initq_info_h = init_frame_h + 64; | |
3142 | ||
3143 | context = init_frame->context; | |
3144 | memset(init_frame, 0, MEGAMFI_FRAME_SIZE); | |
3145 | memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); | |
3146 | init_frame->context = context; | |
3147 | ||
3148 | initq_info->reply_queue_entries = instance->max_fw_cmds + 1; | |
3149 | initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; | |
3150 | ||
3151 | initq_info->producer_index_phys_addr_lo = instance->producer_h; | |
3152 | initq_info->consumer_index_phys_addr_lo = instance->consumer_h; | |
3153 | ||
3154 | init_frame->cmd = MFI_CMD_INIT; | |
3155 | init_frame->cmd_status = 0xFF; | |
3156 | init_frame->queue_info_new_phys_addr_lo = initq_info_h; | |
3157 | ||
3158 | init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); | |
3159 | ||
3160 | /* | |
3161 | * disable the intr before firing the init frame to FW | |
3162 | */ | |
3163 | instance->instancet->disable_intr(instance->reg_set); | |
3164 | ||
3165 | /* | |
3166 | * Issue the init frame in polled mode | |
3167 | */ | |
3168 | ||
3169 | if (megasas_issue_polled(instance, cmd)) { | |
3170 | printk(KERN_ERR "megasas: Failed to init firmware\n"); | |
3171 | megasas_return_cmd(instance, cmd); | |
3172 | goto fail_fw_init; | |
3173 | } | |
3174 | ||
3175 | megasas_return_cmd(instance, cmd); | |
3176 | ||
3177 | return 0; | |
3178 | ||
3179 | fail_fw_init: | |
3180 | return -EINVAL; | |
3181 | } | |
3182 | ||
ad84db2e | 3183 | /** |
3184 | * megasas_start_timer - Initializes a timer object | |
3185 | * @instance: Adapter soft state | |
3186 | * @timer: timer object to be initialized | |
3187 | * @fn: timer function | |
3188 | * @interval: time interval between timer function call | |
3189 | */ | |
3190 | static inline void | |
3191 | megasas_start_timer(struct megasas_instance *instance, | |
3192 | struct timer_list *timer, | |
3193 | void *fn, unsigned long interval) | |
3194 | { | |
3195 | init_timer(timer); | |
3196 | timer->expires = jiffies + interval; | |
3197 | timer->data = (unsigned long)instance; | |
3198 | timer->function = fn; | |
3199 | add_timer(timer); | |
3200 | } | |
3201 | ||
3202 | /** | |
3203 | * megasas_io_completion_timer - Timer fn | |
3204 | * @instance_addr: Address of adapter soft state | |
3205 | * | |
3206 | * Schedules tasklet for cmd completion | |
3207 | * if poll_mode_io is set | |
3208 | */ | |
3209 | static void | |
3210 | megasas_io_completion_timer(unsigned long instance_addr) | |
3211 | { | |
3212 | struct megasas_instance *instance = | |
3213 | (struct megasas_instance *)instance_addr; | |
3214 | ||
3215 | if (atomic_read(&instance->fw_outstanding)) | |
3216 | tasklet_schedule(&instance->isr_tasklet); | |
3217 | ||
3218 | /* Restart timer */ | |
3219 | if (poll_mode_io) | |
3220 | mod_timer(&instance->io_completion_timer, | |
3221 | jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL); | |
3222 | } | |
3223 | ||
c4a3e0a5 BS |
3224 | /** |
3225 | * megasas_init_mfi - Initializes the FW | |
3226 | * @instance: Adapter soft state | |
3227 | * | |
3228 | * This is the main function for initializing MFI firmware. | |
3229 | */ | |
3230 | static int megasas_init_mfi(struct megasas_instance *instance) | |
3231 | { | |
3232 | u32 context_sz; | |
3233 | u32 reply_q_sz; | |
3234 | u32 max_sectors_1; | |
3235 | u32 max_sectors_2; | |
14faea9f | 3236 | u32 tmp_sectors; |
c4a3e0a5 | 3237 | struct megasas_register_set __iomem *reg_set; |
c4a3e0a5 | 3238 | struct megasas_ctrl_info *ctrl_info; |
c4a3e0a5 BS |
3239 | /* |
3240 | * Map the message registers | |
3241 | */ | |
6610a6b3 | 3242 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) || |
87911122 YB |
3243 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || |
3244 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
6610a6b3 YB |
3245 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) { |
3246 | instance->base_addr = pci_resource_start(instance->pdev, 1); | |
3247 | } else { | |
3248 | instance->base_addr = pci_resource_start(instance->pdev, 0); | |
3249 | } | |
c4a3e0a5 | 3250 | |
aeab3fd7 NF |
3251 | if (pci_request_selected_regions(instance->pdev, |
3252 | pci_select_bars(instance->pdev, IORESOURCE_MEM), | |
3253 | "megasas: LSI")) { | |
c4a3e0a5 BS |
3254 | printk(KERN_DEBUG "megasas: IO memory region busy!\n"); |
3255 | return -EBUSY; | |
3256 | } | |
3257 | ||
3258 | instance->reg_set = ioremap_nocache(instance->base_addr, 8192); | |
3259 | ||
3260 | if (!instance->reg_set) { | |
3261 | printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); | |
3262 | goto fail_ioremap; | |
3263 | } | |
3264 | ||
3265 | reg_set = instance->reg_set; | |
3266 | ||
f9876f0b SP |
3267 | switch(instance->pdev->device) |
3268 | { | |
af7a5647 | 3269 | case PCI_DEVICE_ID_LSI_SAS1078R: |
3270 | case PCI_DEVICE_ID_LSI_SAS1078DE: | |
f9876f0b SP |
3271 | instance->instancet = &megasas_instance_template_ppc; |
3272 | break; | |
6610a6b3 YB |
3273 | case PCI_DEVICE_ID_LSI_SAS1078GEN2: |
3274 | case PCI_DEVICE_ID_LSI_SAS0079GEN2: | |
3275 | instance->instancet = &megasas_instance_template_gen2; | |
3276 | break; | |
87911122 YB |
3277 | case PCI_DEVICE_ID_LSI_SAS0073SKINNY: |
3278 | case PCI_DEVICE_ID_LSI_SAS0071SKINNY: | |
3279 | instance->instancet = &megasas_instance_template_skinny; | |
3280 | break; | |
f9876f0b SP |
3281 | case PCI_DEVICE_ID_LSI_SAS1064R: |
3282 | case PCI_DEVICE_ID_DELL_PERC5: | |
3283 | default: | |
3284 | instance->instancet = &megasas_instance_template_xscale; | |
3285 | break; | |
3286 | } | |
1341c939 | 3287 | |
c4a3e0a5 BS |
3288 | /* |
3289 | * We expect the FW state to be READY | |
3290 | */ | |
1341c939 | 3291 | if (megasas_transition_to_ready(instance)) |
c4a3e0a5 BS |
3292 | goto fail_ready_state; |
3293 | ||
3294 | /* | |
3295 | * Get various operational parameters from status register | |
3296 | */ | |
1341c939 | 3297 | instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; |
e3bbff9f SP |
3298 | /* |
3299 | * Reduce the max supported cmds by 1. This is to ensure that the | |
3300 | * reply_q_sz (1 more than the max cmd that driver may send) | |
3301 | * does not exceed max cmds that the FW can support | |
3302 | */ | |
3303 | instance->max_fw_cmds = instance->max_fw_cmds-1; | |
0d49016b | 3304 | instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> |
1341c939 | 3305 | 0x10; |
c4a3e0a5 BS |
3306 | /* |
3307 | * Create a pool of commands | |
3308 | */ | |
3309 | if (megasas_alloc_cmds(instance)) | |
3310 | goto fail_alloc_cmds; | |
3311 | ||
3312 | /* | |
3313 | * Allocate memory for reply queue. Length of reply queue should | |
3314 | * be _one_ more than the maximum commands handled by the firmware. | |
3315 | * | |
3316 | * Note: When FW completes commands, it places corresponding contex | |
3317 | * values in this circular reply queue. This circular queue is a fairly | |
3318 | * typical producer-consumer queue. FW is the producer (of completed | |
3319 | * commands) and the driver is the consumer. | |
3320 | */ | |
3321 | context_sz = sizeof(u32); | |
3322 | reply_q_sz = context_sz * (instance->max_fw_cmds + 1); | |
3323 | ||
3324 | instance->reply_queue = pci_alloc_consistent(instance->pdev, | |
3325 | reply_q_sz, | |
3326 | &instance->reply_queue_h); | |
3327 | ||
3328 | if (!instance->reply_queue) { | |
3329 | printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); | |
3330 | goto fail_reply_queue; | |
3331 | } | |
3332 | ||
31ea7088 | 3333 | if (megasas_issue_init_mfi(instance)) |
c4a3e0a5 | 3334 | goto fail_fw_init; |
c4a3e0a5 | 3335 | |
39a98554 | 3336 | instance->fw_support_ieee = 0; |
3337 | instance->fw_support_ieee = | |
3338 | (instance->instancet->read_fw_status_reg(reg_set) & | |
3339 | 0x04000000); | |
3340 | ||
3341 | printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", | |
3342 | instance->fw_support_ieee); | |
3343 | ||
3344 | if (instance->fw_support_ieee) | |
3345 | instance->flag_ieee = 1; | |
3346 | ||
3347 | /** for passthrough | |
3348 | * the following function will get the PD LIST. | |
3349 | */ | |
3350 | ||
81e403ce YB |
3351 | memset(instance->pd_list, 0 , |
3352 | (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); | |
3353 | megasas_get_pd_list(instance); | |
3354 | ||
bdc6fb8d YB |
3355 | memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); |
3356 | megasas_get_ld_list(instance); | |
3357 | ||
c4a3e0a5 BS |
3358 | ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); |
3359 | ||
3360 | /* | |
3361 | * Compute the max allowed sectors per IO: The controller info has two | |
3362 | * limits on max sectors. Driver should use the minimum of these two. | |
3363 | * | |
3364 | * 1 << stripe_sz_ops.min = max sectors per strip | |
3365 | * | |
3366 | * Note that older firmwares ( < FW ver 30) didn't report information | |
3367 | * to calculate max_sectors_1. So the number ended up as zero always. | |
3368 | */ | |
14faea9f | 3369 | tmp_sectors = 0; |
c4a3e0a5 BS |
3370 | if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { |
3371 | ||
3372 | max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * | |
3373 | ctrl_info->max_strips_per_io; | |
3374 | max_sectors_2 = ctrl_info->max_request_size; | |
3375 | ||
14faea9f | 3376 | tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); |
39a98554 | 3377 | instance->disableOnlineCtrlReset = |
3378 | ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; | |
14faea9f | 3379 | } |
3380 | ||
3381 | instance->max_sectors_per_req = instance->max_num_sge * | |
3382 | PAGE_SIZE / 512; | |
3383 | if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) | |
3384 | instance->max_sectors_per_req = tmp_sectors; | |
c4a3e0a5 BS |
3385 | |
3386 | kfree(ctrl_info); | |
3387 | ||
5d018ad0 SP |
3388 | /* |
3389 | * Setup tasklet for cmd completion | |
3390 | */ | |
3391 | ||
ad84db2e | 3392 | tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, |
3393 | (unsigned long)instance); | |
3394 | ||
3395 | /* Initialize the cmd completion timer */ | |
3396 | if (poll_mode_io) | |
3397 | megasas_start_timer(instance, &instance->io_completion_timer, | |
3398 | megasas_io_completion_timer, | |
3399 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
c4a3e0a5 BS |
3400 | return 0; |
3401 | ||
3402 | fail_fw_init: | |
c4a3e0a5 BS |
3403 | |
3404 | pci_free_consistent(instance->pdev, reply_q_sz, | |
3405 | instance->reply_queue, instance->reply_queue_h); | |
3406 | fail_reply_queue: | |
3407 | megasas_free_cmds(instance); | |
3408 | ||
3409 | fail_alloc_cmds: | |
3410 | fail_ready_state: | |
3411 | iounmap(instance->reg_set); | |
3412 | ||
3413 | fail_ioremap: | |
aeab3fd7 NF |
3414 | pci_release_selected_regions(instance->pdev, |
3415 | pci_select_bars(instance->pdev, IORESOURCE_MEM)); | |
c4a3e0a5 BS |
3416 | |
3417 | return -EINVAL; | |
3418 | } | |
3419 | ||
3420 | /** | |
3421 | * megasas_release_mfi - Reverses the FW initialization | |
3422 | * @intance: Adapter soft state | |
3423 | */ | |
3424 | static void megasas_release_mfi(struct megasas_instance *instance) | |
3425 | { | |
3426 | u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1); | |
3427 | ||
3428 | pci_free_consistent(instance->pdev, reply_q_sz, | |
3429 | instance->reply_queue, instance->reply_queue_h); | |
3430 | ||
3431 | megasas_free_cmds(instance); | |
3432 | ||
3433 | iounmap(instance->reg_set); | |
3434 | ||
aeab3fd7 NF |
3435 | pci_release_selected_regions(instance->pdev, |
3436 | pci_select_bars(instance->pdev, IORESOURCE_MEM)); | |
c4a3e0a5 BS |
3437 | } |
3438 | ||
3439 | /** | |
3440 | * megasas_get_seq_num - Gets latest event sequence numbers | |
3441 | * @instance: Adapter soft state | |
3442 | * @eli: FW event log sequence numbers information | |
3443 | * | |
3444 | * FW maintains a log of all events in a non-volatile area. Upper layers would | |
3445 | * usually find out the latest sequence number of the events, the seq number at | |
3446 | * the boot etc. They would "read" all the events below the latest seq number | |
3447 | * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq | |
3448 | * number), they would subsribe to AEN (asynchronous event notification) and | |
3449 | * wait for the events to happen. | |
3450 | */ | |
3451 | static int | |
3452 | megasas_get_seq_num(struct megasas_instance *instance, | |
3453 | struct megasas_evt_log_info *eli) | |
3454 | { | |
3455 | struct megasas_cmd *cmd; | |
3456 | struct megasas_dcmd_frame *dcmd; | |
3457 | struct megasas_evt_log_info *el_info; | |
3458 | dma_addr_t el_info_h = 0; | |
3459 | ||
3460 | cmd = megasas_get_cmd(instance); | |
3461 | ||
3462 | if (!cmd) { | |
3463 | return -ENOMEM; | |
3464 | } | |
3465 | ||
3466 | dcmd = &cmd->frame->dcmd; | |
3467 | el_info = pci_alloc_consistent(instance->pdev, | |
3468 | sizeof(struct megasas_evt_log_info), | |
3469 | &el_info_h); | |
3470 | ||
3471 | if (!el_info) { | |
3472 | megasas_return_cmd(instance, cmd); | |
3473 | return -ENOMEM; | |
3474 | } | |
3475 | ||
3476 | memset(el_info, 0, sizeof(*el_info)); | |
3477 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3478 | ||
3479 | dcmd->cmd = MFI_CMD_DCMD; | |
3480 | dcmd->cmd_status = 0x0; | |
3481 | dcmd->sge_count = 1; | |
3482 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3483 | dcmd->timeout = 0; | |
780a3762 | 3484 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
3485 | dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); |
3486 | dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; | |
3487 | dcmd->sgl.sge32[0].phys_addr = el_info_h; | |
3488 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); | |
3489 | ||
3490 | megasas_issue_blocked_cmd(instance, cmd); | |
3491 | ||
3492 | /* | |
3493 | * Copy the data back into callers buffer | |
3494 | */ | |
3495 | memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); | |
3496 | ||
3497 | pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), | |
3498 | el_info, el_info_h); | |
3499 | ||
3500 | megasas_return_cmd(instance, cmd); | |
3501 | ||
3502 | return 0; | |
3503 | } | |
3504 | ||
3505 | /** | |
3506 | * megasas_register_aen - Registers for asynchronous event notification | |
3507 | * @instance: Adapter soft state | |
3508 | * @seq_num: The starting sequence number | |
3509 | * @class_locale: Class of the event | |
3510 | * | |
3511 | * This function subscribes for AEN for events beyond the @seq_num. It requests | |
3512 | * to be notified if and only if the event is of type @class_locale | |
3513 | */ | |
3514 | static int | |
3515 | megasas_register_aen(struct megasas_instance *instance, u32 seq_num, | |
3516 | u32 class_locale_word) | |
3517 | { | |
3518 | int ret_val; | |
3519 | struct megasas_cmd *cmd; | |
3520 | struct megasas_dcmd_frame *dcmd; | |
3521 | union megasas_evt_class_locale curr_aen; | |
3522 | union megasas_evt_class_locale prev_aen; | |
3523 | ||
3524 | /* | |
3525 | * If there an AEN pending already (aen_cmd), check if the | |
3526 | * class_locale of that pending AEN is inclusive of the new | |
3527 | * AEN request we currently have. If it is, then we don't have | |
3528 | * to do anything. In other words, whichever events the current | |
3529 | * AEN request is subscribing to, have already been subscribed | |
3530 | * to. | |
3531 | * | |
3532 | * If the old_cmd is _not_ inclusive, then we have to abort | |
3533 | * that command, form a class_locale that is superset of both | |
3534 | * old and current and re-issue to the FW | |
3535 | */ | |
3536 | ||
3537 | curr_aen.word = class_locale_word; | |
3538 | ||
3539 | if (instance->aen_cmd) { | |
3540 | ||
3541 | prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; | |
3542 | ||
3543 | /* | |
3544 | * A class whose enum value is smaller is inclusive of all | |
3545 | * higher values. If a PROGRESS (= -1) was previously | |
3546 | * registered, then a new registration requests for higher | |
3547 | * classes need not be sent to FW. They are automatically | |
3548 | * included. | |
3549 | * | |
3550 | * Locale numbers don't have such hierarchy. They are bitmap | |
3551 | * values | |
3552 | */ | |
3553 | if ((prev_aen.members.class <= curr_aen.members.class) && | |
3554 | !((prev_aen.members.locale & curr_aen.members.locale) ^ | |
3555 | curr_aen.members.locale)) { | |
3556 | /* | |
3557 | * Previously issued event registration includes | |
3558 | * current request. Nothing to do. | |
3559 | */ | |
3560 | return 0; | |
3561 | } else { | |
3562 | curr_aen.members.locale |= prev_aen.members.locale; | |
3563 | ||
3564 | if (prev_aen.members.class < curr_aen.members.class) | |
3565 | curr_aen.members.class = prev_aen.members.class; | |
3566 | ||
3567 | instance->aen_cmd->abort_aen = 1; | |
3568 | ret_val = megasas_issue_blocked_abort_cmd(instance, | |
3569 | instance-> | |
3570 | aen_cmd); | |
3571 | ||
3572 | if (ret_val) { | |
3573 | printk(KERN_DEBUG "megasas: Failed to abort " | |
3574 | "previous AEN command\n"); | |
3575 | return ret_val; | |
3576 | } | |
3577 | } | |
3578 | } | |
3579 | ||
3580 | cmd = megasas_get_cmd(instance); | |
3581 | ||
3582 | if (!cmd) | |
3583 | return -ENOMEM; | |
3584 | ||
3585 | dcmd = &cmd->frame->dcmd; | |
3586 | ||
3587 | memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); | |
3588 | ||
3589 | /* | |
3590 | * Prepare DCMD for aen registration | |
3591 | */ | |
3592 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3593 | ||
3594 | dcmd->cmd = MFI_CMD_DCMD; | |
3595 | dcmd->cmd_status = 0x0; | |
3596 | dcmd->sge_count = 1; | |
3597 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3598 | dcmd->timeout = 0; | |
780a3762 | 3599 | dcmd->pad_0 = 0; |
39a98554 | 3600 | instance->last_seq_num = seq_num; |
c4a3e0a5 BS |
3601 | dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); |
3602 | dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; | |
3603 | dcmd->mbox.w[0] = seq_num; | |
3604 | dcmd->mbox.w[1] = curr_aen.word; | |
3605 | dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; | |
3606 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); | |
3607 | ||
f4c9a131 YB |
3608 | if (instance->aen_cmd != NULL) { |
3609 | megasas_return_cmd(instance, cmd); | |
3610 | return 0; | |
3611 | } | |
3612 | ||
c4a3e0a5 BS |
3613 | /* |
3614 | * Store reference to the cmd used to register for AEN. When an | |
3615 | * application wants us to register for AEN, we have to abort this | |
3616 | * cmd and re-register with a new EVENT LOCALE supplied by that app | |
3617 | */ | |
3618 | instance->aen_cmd = cmd; | |
3619 | ||
3620 | /* | |
3621 | * Issue the aen registration frame | |
3622 | */ | |
0c79e681 YB |
3623 | instance->instancet->fire_cmd(instance, |
3624 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 BS |
3625 | |
3626 | return 0; | |
3627 | } | |
3628 | ||
3629 | /** | |
3630 | * megasas_start_aen - Subscribes to AEN during driver load time | |
3631 | * @instance: Adapter soft state | |
3632 | */ | |
3633 | static int megasas_start_aen(struct megasas_instance *instance) | |
3634 | { | |
3635 | struct megasas_evt_log_info eli; | |
3636 | union megasas_evt_class_locale class_locale; | |
3637 | ||
3638 | /* | |
3639 | * Get the latest sequence number from FW | |
3640 | */ | |
3641 | memset(&eli, 0, sizeof(eli)); | |
3642 | ||
3643 | if (megasas_get_seq_num(instance, &eli)) | |
3644 | return -1; | |
3645 | ||
3646 | /* | |
3647 | * Register AEN with FW for latest sequence number plus 1 | |
3648 | */ | |
3649 | class_locale.members.reserved = 0; | |
3650 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
3651 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
3652 | ||
3653 | return megasas_register_aen(instance, eli.newest_seq_num + 1, | |
3654 | class_locale.word); | |
3655 | } | |
3656 | ||
3657 | /** | |
3658 | * megasas_io_attach - Attaches this driver to SCSI mid-layer | |
3659 | * @instance: Adapter soft state | |
3660 | */ | |
3661 | static int megasas_io_attach(struct megasas_instance *instance) | |
3662 | { | |
3663 | struct Scsi_Host *host = instance->host; | |
3664 | ||
3665 | /* | |
3666 | * Export parameters required by SCSI mid-layer | |
3667 | */ | |
3668 | host->irq = instance->pdev->irq; | |
3669 | host->unique_id = instance->unique_id; | |
7bebf5c7 YB |
3670 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
3671 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
3672 | host->can_queue = | |
3673 | instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; | |
3674 | } else | |
3675 | host->can_queue = | |
3676 | instance->max_fw_cmds - MEGASAS_INT_CMDS; | |
c4a3e0a5 BS |
3677 | host->this_id = instance->init_id; |
3678 | host->sg_tablesize = instance->max_num_sge; | |
1fd10685 YB |
3679 | /* |
3680 | * Check if the module parameter value for max_sectors can be used | |
3681 | */ | |
3682 | if (max_sectors && max_sectors < instance->max_sectors_per_req) | |
3683 | instance->max_sectors_per_req = max_sectors; | |
3684 | else { | |
3685 | if (max_sectors) { | |
3686 | if (((instance->pdev->device == | |
3687 | PCI_DEVICE_ID_LSI_SAS1078GEN2) || | |
3688 | (instance->pdev->device == | |
3689 | PCI_DEVICE_ID_LSI_SAS0079GEN2)) && | |
3690 | (max_sectors <= MEGASAS_MAX_SECTORS)) { | |
3691 | instance->max_sectors_per_req = max_sectors; | |
3692 | } else { | |
3693 | printk(KERN_INFO "megasas: max_sectors should be > 0" | |
3694 | "and <= %d (or < 1MB for GEN2 controller)\n", | |
3695 | instance->max_sectors_per_req); | |
3696 | } | |
3697 | } | |
3698 | } | |
3699 | ||
c4a3e0a5 BS |
3700 | host->max_sectors = instance->max_sectors_per_req; |
3701 | host->cmd_per_lun = 128; | |
3702 | host->max_channel = MEGASAS_MAX_CHANNELS - 1; | |
3703 | host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; | |
3704 | host->max_lun = MEGASAS_MAX_LUN; | |
122da302 | 3705 | host->max_cmd_len = 16; |
c4a3e0a5 BS |
3706 | |
3707 | /* | |
3708 | * Notify the mid-layer about the new controller | |
3709 | */ | |
3710 | if (scsi_add_host(host, &instance->pdev->dev)) { | |
3711 | printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); | |
3712 | return -ENODEV; | |
3713 | } | |
3714 | ||
3715 | /* | |
3716 | * Trigger SCSI to scan our drives | |
3717 | */ | |
3718 | scsi_scan_host(host); | |
3719 | return 0; | |
3720 | } | |
3721 | ||
31ea7088 | 3722 | static int |
3723 | megasas_set_dma_mask(struct pci_dev *pdev) | |
3724 | { | |
3725 | /* | |
3726 | * All our contollers are capable of performing 64-bit DMA | |
3727 | */ | |
3728 | if (IS_DMA64) { | |
6a35528a | 3729 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { |
31ea7088 | 3730 | |
284901a9 | 3731 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) |
31ea7088 | 3732 | goto fail_set_dma_mask; |
3733 | } | |
3734 | } else { | |
284901a9 | 3735 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) |
31ea7088 | 3736 | goto fail_set_dma_mask; |
3737 | } | |
3738 | return 0; | |
3739 | ||
3740 | fail_set_dma_mask: | |
3741 | return 1; | |
3742 | } | |
3743 | ||
c4a3e0a5 BS |
3744 | /** |
3745 | * megasas_probe_one - PCI hotplug entry point | |
3746 | * @pdev: PCI device structure | |
0d49016b | 3747 | * @id: PCI ids of supported hotplugged adapter |
c4a3e0a5 BS |
3748 | */ |
3749 | static int __devinit | |
3750 | megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
3751 | { | |
3752 | int rval; | |
3753 | struct Scsi_Host *host; | |
3754 | struct megasas_instance *instance; | |
3755 | ||
3756 | /* | |
3757 | * Announce PCI information | |
3758 | */ | |
3759 | printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
3760 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
3761 | pdev->subsystem_device); | |
3762 | ||
3763 | printk("bus %d:slot %d:func %d\n", | |
3764 | pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); | |
3765 | ||
3766 | /* | |
3767 | * PCI prepping: enable device set bus mastering and dma mask | |
3768 | */ | |
aeab3fd7 | 3769 | rval = pci_enable_device_mem(pdev); |
c4a3e0a5 BS |
3770 | |
3771 | if (rval) { | |
3772 | return rval; | |
3773 | } | |
3774 | ||
3775 | pci_set_master(pdev); | |
3776 | ||
31ea7088 | 3777 | if (megasas_set_dma_mask(pdev)) |
3778 | goto fail_set_dma_mask; | |
c4a3e0a5 BS |
3779 | |
3780 | host = scsi_host_alloc(&megasas_template, | |
3781 | sizeof(struct megasas_instance)); | |
3782 | ||
3783 | if (!host) { | |
3784 | printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); | |
3785 | goto fail_alloc_instance; | |
3786 | } | |
3787 | ||
3788 | instance = (struct megasas_instance *)host->hostdata; | |
3789 | memset(instance, 0, sizeof(*instance)); | |
39a98554 | 3790 | atomic_set( &instance->fw_reset_no_pci_access, 0 ); |
c4a3e0a5 BS |
3791 | |
3792 | instance->producer = pci_alloc_consistent(pdev, sizeof(u32), | |
3793 | &instance->producer_h); | |
3794 | instance->consumer = pci_alloc_consistent(pdev, sizeof(u32), | |
3795 | &instance->consumer_h); | |
3796 | ||
3797 | if (!instance->producer || !instance->consumer) { | |
3798 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " | |
3799 | "producer, consumer\n"); | |
3800 | goto fail_alloc_dma_buf; | |
3801 | } | |
3802 | ||
3803 | *instance->producer = 0; | |
3804 | *instance->consumer = 0; | |
c3518837 | 3805 | megasas_poll_wait_aen = 0; |
f4c9a131 | 3806 | instance->flag_ieee = 0; |
7e8a75f4 | 3807 | instance->ev = NULL; |
39a98554 | 3808 | instance->issuepend_done = 1; |
3809 | instance->adprecovery = MEGASAS_HBA_OPERATIONAL; | |
3810 | megasas_poll_wait_aen = 0; | |
c4a3e0a5 BS |
3811 | |
3812 | instance->evt_detail = pci_alloc_consistent(pdev, | |
3813 | sizeof(struct | |
3814 | megasas_evt_detail), | |
3815 | &instance->evt_detail_h); | |
3816 | ||
3817 | if (!instance->evt_detail) { | |
3818 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " | |
3819 | "event detail structure\n"); | |
3820 | goto fail_alloc_dma_buf; | |
3821 | } | |
3822 | ||
3823 | /* | |
3824 | * Initialize locks and queues | |
3825 | */ | |
3826 | INIT_LIST_HEAD(&instance->cmd_pool); | |
39a98554 | 3827 | INIT_LIST_HEAD(&instance->internal_reset_pending_q); |
c4a3e0a5 | 3828 | |
e4a082c7 SP |
3829 | atomic_set(&instance->fw_outstanding,0); |
3830 | ||
c4a3e0a5 BS |
3831 | init_waitqueue_head(&instance->int_cmd_wait_q); |
3832 | init_waitqueue_head(&instance->abort_cmd_wait_q); | |
3833 | ||
3834 | spin_lock_init(&instance->cmd_pool_lock); | |
39a98554 | 3835 | spin_lock_init(&instance->hba_lock); |
7343eb65 | 3836 | spin_lock_init(&instance->completion_lock); |
c3518837 | 3837 | spin_lock_init(&poll_aen_lock); |
c4a3e0a5 | 3838 | |
e5a69e27 | 3839 | mutex_init(&instance->aen_mutex); |
c4a3e0a5 BS |
3840 | |
3841 | /* | |
3842 | * Initialize PCI related and misc parameters | |
3843 | */ | |
3844 | instance->pdev = pdev; | |
3845 | instance->host = host; | |
3846 | instance->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
3847 | instance->init_id = MEGASAS_DEFAULT_INIT_ID; | |
3848 | ||
7bebf5c7 YB |
3849 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
3850 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
f4c9a131 | 3851 | instance->flag_ieee = 1; |
7bebf5c7 YB |
3852 | sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); |
3853 | } else | |
3854 | sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); | |
3855 | ||
658dcedb | 3856 | megasas_dbg_lvl = 0; |
05e9ebbe | 3857 | instance->flag = 0; |
0c79e681 | 3858 | instance->unload = 1; |
05e9ebbe | 3859 | instance->last_time = 0; |
39a98554 | 3860 | instance->disableOnlineCtrlReset = 1; |
3861 | ||
3862 | INIT_WORK(&instance->work_init, process_fw_state_change_wq); | |
658dcedb | 3863 | |
c4a3e0a5 BS |
3864 | /* |
3865 | * Initialize MFI Firmware | |
3866 | */ | |
3867 | if (megasas_init_mfi(instance)) | |
3868 | goto fail_init_mfi; | |
3869 | ||
80d9da98 | 3870 | /* Try to enable MSI-X */ |
3871 | if ((instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078R) && | |
3872 | (instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078DE) && | |
3873 | (instance->pdev->device != PCI_DEVICE_ID_LSI_VERDE_ZCR) && | |
3874 | !msix_disable && !pci_enable_msix(instance->pdev, | |
3875 | &instance->msixentry, 1)) | |
3876 | instance->msi_flag = 1; | |
3877 | ||
c4a3e0a5 BS |
3878 | /* |
3879 | * Register IRQ | |
3880 | */ | |
80d9da98 | 3881 | if (request_irq(instance->msi_flag ? instance->msixentry.vector : |
3882 | pdev->irq, megasas_isr, | |
3883 | IRQF_SHARED, "megasas", instance)) { | |
c4a3e0a5 BS |
3884 | printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); |
3885 | goto fail_irq; | |
3886 | } | |
3887 | ||
1341c939 | 3888 | instance->instancet->enable_intr(instance->reg_set); |
c4a3e0a5 BS |
3889 | |
3890 | /* | |
3891 | * Store instance in PCI softstate | |
3892 | */ | |
3893 | pci_set_drvdata(pdev, instance); | |
3894 | ||
3895 | /* | |
3896 | * Add this controller to megasas_mgmt_info structure so that it | |
3897 | * can be exported to management applications | |
3898 | */ | |
3899 | megasas_mgmt_info.count++; | |
3900 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; | |
3901 | megasas_mgmt_info.max_index++; | |
3902 | ||
3903 | /* | |
3904 | * Initiate AEN (Asynchronous Event Notification) | |
3905 | */ | |
3906 | if (megasas_start_aen(instance)) { | |
3907 | printk(KERN_DEBUG "megasas: start aen failed\n"); | |
3908 | goto fail_start_aen; | |
3909 | } | |
3910 | ||
3911 | /* | |
3912 | * Register with SCSI mid-layer | |
3913 | */ | |
3914 | if (megasas_io_attach(instance)) | |
3915 | goto fail_io_attach; | |
3916 | ||
0c79e681 | 3917 | instance->unload = 0; |
c4a3e0a5 BS |
3918 | return 0; |
3919 | ||
3920 | fail_start_aen: | |
3921 | fail_io_attach: | |
3922 | megasas_mgmt_info.count--; | |
3923 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; | |
3924 | megasas_mgmt_info.max_index--; | |
3925 | ||
3926 | pci_set_drvdata(pdev, NULL); | |
b274cab7 | 3927 | instance->instancet->disable_intr(instance->reg_set); |
80d9da98 | 3928 | free_irq(instance->msi_flag ? instance->msixentry.vector : |
3929 | instance->pdev->irq, instance); | |
3930 | if (instance->msi_flag) | |
3931 | pci_disable_msix(instance->pdev); | |
c4a3e0a5 BS |
3932 | megasas_release_mfi(instance); |
3933 | ||
3934 | fail_irq: | |
3935 | fail_init_mfi: | |
3936 | fail_alloc_dma_buf: | |
3937 | if (instance->evt_detail) | |
3938 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
3939 | instance->evt_detail, | |
3940 | instance->evt_detail_h); | |
3941 | ||
3942 | if (instance->producer) | |
3943 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
3944 | instance->producer_h); | |
3945 | if (instance->consumer) | |
3946 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
3947 | instance->consumer_h); | |
3948 | scsi_host_put(host); | |
3949 | ||
3950 | fail_alloc_instance: | |
3951 | fail_set_dma_mask: | |
3952 | pci_disable_device(pdev); | |
3953 | ||
3954 | return -ENODEV; | |
3955 | } | |
3956 | ||
3957 | /** | |
3958 | * megasas_flush_cache - Requests FW to flush all its caches | |
3959 | * @instance: Adapter soft state | |
3960 | */ | |
3961 | static void megasas_flush_cache(struct megasas_instance *instance) | |
3962 | { | |
3963 | struct megasas_cmd *cmd; | |
3964 | struct megasas_dcmd_frame *dcmd; | |
3965 | ||
39a98554 | 3966 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) |
3967 | return; | |
3968 | ||
c4a3e0a5 BS |
3969 | cmd = megasas_get_cmd(instance); |
3970 | ||
3971 | if (!cmd) | |
3972 | return; | |
3973 | ||
3974 | dcmd = &cmd->frame->dcmd; | |
3975 | ||
3976 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3977 | ||
3978 | dcmd->cmd = MFI_CMD_DCMD; | |
3979 | dcmd->cmd_status = 0x0; | |
3980 | dcmd->sge_count = 0; | |
3981 | dcmd->flags = MFI_FRAME_DIR_NONE; | |
3982 | dcmd->timeout = 0; | |
780a3762 | 3983 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
3984 | dcmd->data_xfer_len = 0; |
3985 | dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; | |
3986 | dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; | |
3987 | ||
3988 | megasas_issue_blocked_cmd(instance, cmd); | |
3989 | ||
3990 | megasas_return_cmd(instance, cmd); | |
3991 | ||
3992 | return; | |
3993 | } | |
3994 | ||
3995 | /** | |
3996 | * megasas_shutdown_controller - Instructs FW to shutdown the controller | |
3997 | * @instance: Adapter soft state | |
31ea7088 | 3998 | * @opcode: Shutdown/Hibernate |
c4a3e0a5 | 3999 | */ |
31ea7088 | 4000 | static void megasas_shutdown_controller(struct megasas_instance *instance, |
4001 | u32 opcode) | |
c4a3e0a5 BS |
4002 | { |
4003 | struct megasas_cmd *cmd; | |
4004 | struct megasas_dcmd_frame *dcmd; | |
4005 | ||
39a98554 | 4006 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) |
4007 | return; | |
4008 | ||
c4a3e0a5 BS |
4009 | cmd = megasas_get_cmd(instance); |
4010 | ||
4011 | if (!cmd) | |
4012 | return; | |
4013 | ||
4014 | if (instance->aen_cmd) | |
4015 | megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); | |
4016 | ||
4017 | dcmd = &cmd->frame->dcmd; | |
4018 | ||
4019 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
4020 | ||
4021 | dcmd->cmd = MFI_CMD_DCMD; | |
4022 | dcmd->cmd_status = 0x0; | |
4023 | dcmd->sge_count = 0; | |
4024 | dcmd->flags = MFI_FRAME_DIR_NONE; | |
4025 | dcmd->timeout = 0; | |
780a3762 | 4026 | dcmd->pad_0 = 0; |
c4a3e0a5 | 4027 | dcmd->data_xfer_len = 0; |
31ea7088 | 4028 | dcmd->opcode = opcode; |
c4a3e0a5 BS |
4029 | |
4030 | megasas_issue_blocked_cmd(instance, cmd); | |
4031 | ||
4032 | megasas_return_cmd(instance, cmd); | |
4033 | ||
4034 | return; | |
4035 | } | |
4036 | ||
33139b21 | 4037 | #ifdef CONFIG_PM |
31ea7088 | 4038 | /** |
ad84db2e | 4039 | * megasas_suspend - driver suspend entry point |
4040 | * @pdev: PCI device structure | |
31ea7088 | 4041 | * @state: PCI power state to suspend routine |
4042 | */ | |
33139b21 | 4043 | static int |
31ea7088 | 4044 | megasas_suspend(struct pci_dev *pdev, pm_message_t state) |
4045 | { | |
4046 | struct Scsi_Host *host; | |
4047 | struct megasas_instance *instance; | |
4048 | ||
4049 | instance = pci_get_drvdata(pdev); | |
4050 | host = instance->host; | |
0c79e681 | 4051 | instance->unload = 1; |
31ea7088 | 4052 | |
ad84db2e | 4053 | if (poll_mode_io) |
4054 | del_timer_sync(&instance->io_completion_timer); | |
4055 | ||
31ea7088 | 4056 | megasas_flush_cache(instance); |
4057 | megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); | |
7e8a75f4 YB |
4058 | |
4059 | /* cancel the delayed work if this work still in queue */ | |
4060 | if (instance->ev != NULL) { | |
4061 | struct megasas_aen_event *ev = instance->ev; | |
4062 | cancel_delayed_work( | |
4063 | (struct delayed_work *)&ev->hotplug_work); | |
4064 | flush_scheduled_work(); | |
4065 | instance->ev = NULL; | |
4066 | } | |
4067 | ||
31ea7088 | 4068 | tasklet_kill(&instance->isr_tasklet); |
4069 | ||
4070 | pci_set_drvdata(instance->pdev, instance); | |
4071 | instance->instancet->disable_intr(instance->reg_set); | |
80d9da98 | 4072 | free_irq(instance->msi_flag ? instance->msixentry.vector : |
4073 | instance->pdev->irq, instance); | |
4074 | if (instance->msi_flag) | |
4075 | pci_disable_msix(instance->pdev); | |
31ea7088 | 4076 | |
4077 | pci_save_state(pdev); | |
4078 | pci_disable_device(pdev); | |
4079 | ||
4080 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4081 | ||
4082 | return 0; | |
4083 | } | |
4084 | ||
4085 | /** | |
4086 | * megasas_resume- driver resume entry point | |
4087 | * @pdev: PCI device structure | |
4088 | */ | |
33139b21 | 4089 | static int |
31ea7088 | 4090 | megasas_resume(struct pci_dev *pdev) |
4091 | { | |
4092 | int rval; | |
4093 | struct Scsi_Host *host; | |
4094 | struct megasas_instance *instance; | |
4095 | ||
4096 | instance = pci_get_drvdata(pdev); | |
4097 | host = instance->host; | |
4098 | pci_set_power_state(pdev, PCI_D0); | |
4099 | pci_enable_wake(pdev, PCI_D0, 0); | |
4100 | pci_restore_state(pdev); | |
4101 | ||
4102 | /* | |
4103 | * PCI prepping: enable device set bus mastering and dma mask | |
4104 | */ | |
aeab3fd7 | 4105 | rval = pci_enable_device_mem(pdev); |
31ea7088 | 4106 | |
4107 | if (rval) { | |
4108 | printk(KERN_ERR "megasas: Enable device failed\n"); | |
4109 | return rval; | |
4110 | } | |
4111 | ||
4112 | pci_set_master(pdev); | |
4113 | ||
4114 | if (megasas_set_dma_mask(pdev)) | |
4115 | goto fail_set_dma_mask; | |
4116 | ||
4117 | /* | |
4118 | * Initialize MFI Firmware | |
4119 | */ | |
4120 | ||
4121 | *instance->producer = 0; | |
4122 | *instance->consumer = 0; | |
4123 | ||
4124 | atomic_set(&instance->fw_outstanding, 0); | |
4125 | ||
4126 | /* | |
4127 | * We expect the FW state to be READY | |
4128 | */ | |
4129 | if (megasas_transition_to_ready(instance)) | |
4130 | goto fail_ready_state; | |
4131 | ||
4132 | if (megasas_issue_init_mfi(instance)) | |
4133 | goto fail_init_mfi; | |
4134 | ||
4135 | tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, | |
4136 | (unsigned long)instance); | |
4137 | ||
80d9da98 | 4138 | /* Now re-enable MSI-X */ |
4139 | if (instance->msi_flag) | |
4140 | pci_enable_msix(instance->pdev, &instance->msixentry, 1); | |
4141 | ||
31ea7088 | 4142 | /* |
4143 | * Register IRQ | |
4144 | */ | |
80d9da98 | 4145 | if (request_irq(instance->msi_flag ? instance->msixentry.vector : |
4146 | pdev->irq, megasas_isr, | |
4147 | IRQF_SHARED, "megasas", instance)) { | |
31ea7088 | 4148 | printk(KERN_ERR "megasas: Failed to register IRQ\n"); |
4149 | goto fail_irq; | |
4150 | } | |
4151 | ||
4152 | instance->instancet->enable_intr(instance->reg_set); | |
4153 | ||
4154 | /* | |
4155 | * Initiate AEN (Asynchronous Event Notification) | |
4156 | */ | |
4157 | if (megasas_start_aen(instance)) | |
4158 | printk(KERN_ERR "megasas: Start AEN failed\n"); | |
4159 | ||
ad84db2e | 4160 | /* Initialize the cmd completion timer */ |
4161 | if (poll_mode_io) | |
4162 | megasas_start_timer(instance, &instance->io_completion_timer, | |
4163 | megasas_io_completion_timer, | |
4164 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
0c79e681 YB |
4165 | instance->unload = 0; |
4166 | ||
31ea7088 | 4167 | return 0; |
4168 | ||
4169 | fail_irq: | |
4170 | fail_init_mfi: | |
4171 | if (instance->evt_detail) | |
4172 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
4173 | instance->evt_detail, | |
4174 | instance->evt_detail_h); | |
4175 | ||
4176 | if (instance->producer) | |
4177 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
4178 | instance->producer_h); | |
4179 | if (instance->consumer) | |
4180 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
4181 | instance->consumer_h); | |
4182 | scsi_host_put(host); | |
4183 | ||
4184 | fail_set_dma_mask: | |
4185 | fail_ready_state: | |
4186 | ||
4187 | pci_disable_device(pdev); | |
4188 | ||
4189 | return -ENODEV; | |
4190 | } | |
33139b21 JS |
4191 | #else |
4192 | #define megasas_suspend NULL | |
4193 | #define megasas_resume NULL | |
4194 | #endif | |
31ea7088 | 4195 | |
c4a3e0a5 BS |
4196 | /** |
4197 | * megasas_detach_one - PCI hot"un"plug entry point | |
4198 | * @pdev: PCI device structure | |
4199 | */ | |
33139b21 | 4200 | static void __devexit megasas_detach_one(struct pci_dev *pdev) |
c4a3e0a5 BS |
4201 | { |
4202 | int i; | |
4203 | struct Scsi_Host *host; | |
4204 | struct megasas_instance *instance; | |
4205 | ||
4206 | instance = pci_get_drvdata(pdev); | |
c3518837 | 4207 | instance->unload = 1; |
c4a3e0a5 BS |
4208 | host = instance->host; |
4209 | ||
ad84db2e | 4210 | if (poll_mode_io) |
4211 | del_timer_sync(&instance->io_completion_timer); | |
4212 | ||
c4a3e0a5 BS |
4213 | scsi_remove_host(instance->host); |
4214 | megasas_flush_cache(instance); | |
31ea7088 | 4215 | megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); |
7e8a75f4 YB |
4216 | |
4217 | /* cancel the delayed work if this work still in queue*/ | |
4218 | if (instance->ev != NULL) { | |
4219 | struct megasas_aen_event *ev = instance->ev; | |
4220 | cancel_delayed_work( | |
4221 | (struct delayed_work *)&ev->hotplug_work); | |
4222 | flush_scheduled_work(); | |
4223 | instance->ev = NULL; | |
4224 | } | |
4225 | ||
5d018ad0 | 4226 | tasklet_kill(&instance->isr_tasklet); |
c4a3e0a5 BS |
4227 | |
4228 | /* | |
4229 | * Take the instance off the instance array. Note that we will not | |
4230 | * decrement the max_index. We let this array be sparse array | |
4231 | */ | |
4232 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
4233 | if (megasas_mgmt_info.instance[i] == instance) { | |
4234 | megasas_mgmt_info.count--; | |
4235 | megasas_mgmt_info.instance[i] = NULL; | |
4236 | ||
4237 | break; | |
4238 | } | |
4239 | } | |
4240 | ||
4241 | pci_set_drvdata(instance->pdev, NULL); | |
4242 | ||
b274cab7 | 4243 | instance->instancet->disable_intr(instance->reg_set); |
c4a3e0a5 | 4244 | |
80d9da98 | 4245 | free_irq(instance->msi_flag ? instance->msixentry.vector : |
4246 | instance->pdev->irq, instance); | |
4247 | if (instance->msi_flag) | |
4248 | pci_disable_msix(instance->pdev); | |
c4a3e0a5 BS |
4249 | |
4250 | megasas_release_mfi(instance); | |
4251 | ||
4252 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
4253 | instance->evt_detail, instance->evt_detail_h); | |
4254 | ||
4255 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
4256 | instance->producer_h); | |
4257 | ||
4258 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
4259 | instance->consumer_h); | |
4260 | ||
4261 | scsi_host_put(host); | |
4262 | ||
4263 | pci_set_drvdata(pdev, NULL); | |
4264 | ||
4265 | pci_disable_device(pdev); | |
4266 | ||
4267 | return; | |
4268 | } | |
4269 | ||
4270 | /** | |
4271 | * megasas_shutdown - Shutdown entry point | |
4272 | * @device: Generic device structure | |
4273 | */ | |
4274 | static void megasas_shutdown(struct pci_dev *pdev) | |
4275 | { | |
4276 | struct megasas_instance *instance = pci_get_drvdata(pdev); | |
0c79e681 | 4277 | instance->unload = 1; |
c4a3e0a5 | 4278 | megasas_flush_cache(instance); |
530e6fc1 | 4279 | megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); |
c4a3e0a5 BS |
4280 | } |
4281 | ||
4282 | /** | |
4283 | * megasas_mgmt_open - char node "open" entry point | |
4284 | */ | |
4285 | static int megasas_mgmt_open(struct inode *inode, struct file *filep) | |
4286 | { | |
4287 | /* | |
4288 | * Allow only those users with admin rights | |
4289 | */ | |
4290 | if (!capable(CAP_SYS_ADMIN)) | |
4291 | return -EACCES; | |
4292 | ||
4293 | return 0; | |
4294 | } | |
4295 | ||
c4a3e0a5 BS |
4296 | /** |
4297 | * megasas_mgmt_fasync - Async notifier registration from applications | |
4298 | * | |
4299 | * This function adds the calling process to a driver global queue. When an | |
4300 | * event occurs, SIGIO will be sent to all processes in this queue. | |
4301 | */ | |
4302 | static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) | |
4303 | { | |
4304 | int rc; | |
4305 | ||
0b950672 | 4306 | mutex_lock(&megasas_async_queue_mutex); |
c4a3e0a5 BS |
4307 | |
4308 | rc = fasync_helper(fd, filep, mode, &megasas_async_queue); | |
4309 | ||
0b950672 | 4310 | mutex_unlock(&megasas_async_queue_mutex); |
c4a3e0a5 BS |
4311 | |
4312 | if (rc >= 0) { | |
4313 | /* For sanity check when we get ioctl */ | |
4314 | filep->private_data = filep; | |
4315 | return 0; | |
4316 | } | |
4317 | ||
4318 | printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); | |
4319 | ||
4320 | return rc; | |
4321 | } | |
4322 | ||
c3518837 YB |
4323 | /** |
4324 | * megasas_mgmt_poll - char node "poll" entry point | |
4325 | * */ | |
4326 | static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) | |
4327 | { | |
4328 | unsigned int mask; | |
4329 | unsigned long flags; | |
4330 | poll_wait(file, &megasas_poll_wait, wait); | |
4331 | spin_lock_irqsave(&poll_aen_lock, flags); | |
4332 | if (megasas_poll_wait_aen) | |
4333 | mask = (POLLIN | POLLRDNORM); | |
4334 | else | |
4335 | mask = 0; | |
4336 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
4337 | return mask; | |
4338 | } | |
4339 | ||
c4a3e0a5 BS |
4340 | /** |
4341 | * megasas_mgmt_fw_ioctl - Issues management ioctls to FW | |
4342 | * @instance: Adapter soft state | |
4343 | * @argp: User's ioctl packet | |
4344 | */ | |
4345 | static int | |
4346 | megasas_mgmt_fw_ioctl(struct megasas_instance *instance, | |
4347 | struct megasas_iocpacket __user * user_ioc, | |
4348 | struct megasas_iocpacket *ioc) | |
4349 | { | |
4350 | struct megasas_sge32 *kern_sge32; | |
4351 | struct megasas_cmd *cmd; | |
4352 | void *kbuff_arr[MAX_IOCTL_SGE]; | |
4353 | dma_addr_t buf_handle = 0; | |
4354 | int error = 0, i; | |
4355 | void *sense = NULL; | |
4356 | dma_addr_t sense_handle; | |
7b2519af | 4357 | unsigned long *sense_ptr; |
c4a3e0a5 BS |
4358 | |
4359 | memset(kbuff_arr, 0, sizeof(kbuff_arr)); | |
4360 | ||
4361 | if (ioc->sge_count > MAX_IOCTL_SGE) { | |
4362 | printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", | |
4363 | ioc->sge_count, MAX_IOCTL_SGE); | |
4364 | return -EINVAL; | |
4365 | } | |
4366 | ||
4367 | cmd = megasas_get_cmd(instance); | |
4368 | if (!cmd) { | |
4369 | printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); | |
4370 | return -ENOMEM; | |
4371 | } | |
4372 | ||
4373 | /* | |
4374 | * User's IOCTL packet has 2 frames (maximum). Copy those two | |
4375 | * frames into our cmd's frames. cmd->frame's context will get | |
4376 | * overwritten when we copy from user's frames. So set that value | |
4377 | * alone separately | |
4378 | */ | |
4379 | memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); | |
4380 | cmd->frame->hdr.context = cmd->index; | |
c3518837 | 4381 | cmd->frame->hdr.pad_0 = 0; |
c4a3e0a5 BS |
4382 | |
4383 | /* | |
4384 | * The management interface between applications and the fw uses | |
4385 | * MFI frames. E.g, RAID configuration changes, LD property changes | |
4386 | * etc are accomplishes through different kinds of MFI frames. The | |
4387 | * driver needs to care only about substituting user buffers with | |
4388 | * kernel buffers in SGLs. The location of SGL is embedded in the | |
4389 | * struct iocpacket itself. | |
4390 | */ | |
4391 | kern_sge32 = (struct megasas_sge32 *) | |
4392 | ((unsigned long)cmd->frame + ioc->sgl_off); | |
4393 | ||
4394 | /* | |
4395 | * For each user buffer, create a mirror buffer and copy in | |
4396 | */ | |
4397 | for (i = 0; i < ioc->sge_count; i++) { | |
9f35fa8a | 4398 | kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, |
c4a3e0a5 | 4399 | ioc->sgl[i].iov_len, |
9f35fa8a | 4400 | &buf_handle, GFP_KERNEL); |
c4a3e0a5 BS |
4401 | if (!kbuff_arr[i]) { |
4402 | printk(KERN_DEBUG "megasas: Failed to alloc " | |
4403 | "kernel SGL buffer for IOCTL \n"); | |
4404 | error = -ENOMEM; | |
4405 | goto out; | |
4406 | } | |
4407 | ||
4408 | /* | |
4409 | * We don't change the dma_coherent_mask, so | |
4410 | * pci_alloc_consistent only returns 32bit addresses | |
4411 | */ | |
4412 | kern_sge32[i].phys_addr = (u32) buf_handle; | |
4413 | kern_sge32[i].length = ioc->sgl[i].iov_len; | |
4414 | ||
4415 | /* | |
4416 | * We created a kernel buffer corresponding to the | |
4417 | * user buffer. Now copy in from the user buffer | |
4418 | */ | |
4419 | if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, | |
4420 | (u32) (ioc->sgl[i].iov_len))) { | |
4421 | error = -EFAULT; | |
4422 | goto out; | |
4423 | } | |
4424 | } | |
4425 | ||
4426 | if (ioc->sense_len) { | |
9f35fa8a SP |
4427 | sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, |
4428 | &sense_handle, GFP_KERNEL); | |
c4a3e0a5 BS |
4429 | if (!sense) { |
4430 | error = -ENOMEM; | |
4431 | goto out; | |
4432 | } | |
4433 | ||
4434 | sense_ptr = | |
7b2519af | 4435 | (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); |
c4a3e0a5 BS |
4436 | *sense_ptr = sense_handle; |
4437 | } | |
4438 | ||
4439 | /* | |
4440 | * Set the sync_cmd flag so that the ISR knows not to complete this | |
4441 | * cmd to the SCSI mid-layer | |
4442 | */ | |
4443 | cmd->sync_cmd = 1; | |
4444 | megasas_issue_blocked_cmd(instance, cmd); | |
4445 | cmd->sync_cmd = 0; | |
4446 | ||
4447 | /* | |
4448 | * copy out the kernel buffers to user buffers | |
4449 | */ | |
4450 | for (i = 0; i < ioc->sge_count; i++) { | |
4451 | if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], | |
4452 | ioc->sgl[i].iov_len)) { | |
4453 | error = -EFAULT; | |
4454 | goto out; | |
4455 | } | |
4456 | } | |
4457 | ||
4458 | /* | |
4459 | * copy out the sense | |
4460 | */ | |
4461 | if (ioc->sense_len) { | |
4462 | /* | |
b70a41e0 | 4463 | * sense_ptr points to the location that has the user |
c4a3e0a5 BS |
4464 | * sense buffer address |
4465 | */ | |
7b2519af YB |
4466 | sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + |
4467 | ioc->sense_off); | |
c4a3e0a5 | 4468 | |
b70a41e0 | 4469 | if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), |
4470 | sense, ioc->sense_len)) { | |
b10c36a5 | 4471 | printk(KERN_ERR "megasas: Failed to copy out to user " |
4472 | "sense data\n"); | |
c4a3e0a5 BS |
4473 | error = -EFAULT; |
4474 | goto out; | |
4475 | } | |
4476 | } | |
4477 | ||
4478 | /* | |
4479 | * copy the status codes returned by the fw | |
4480 | */ | |
4481 | if (copy_to_user(&user_ioc->frame.hdr.cmd_status, | |
4482 | &cmd->frame->hdr.cmd_status, sizeof(u8))) { | |
4483 | printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); | |
4484 | error = -EFAULT; | |
4485 | } | |
4486 | ||
4487 | out: | |
4488 | if (sense) { | |
9f35fa8a | 4489 | dma_free_coherent(&instance->pdev->dev, ioc->sense_len, |
c4a3e0a5 BS |
4490 | sense, sense_handle); |
4491 | } | |
4492 | ||
4493 | for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { | |
9f35fa8a | 4494 | dma_free_coherent(&instance->pdev->dev, |
c4a3e0a5 BS |
4495 | kern_sge32[i].length, |
4496 | kbuff_arr[i], kern_sge32[i].phys_addr); | |
4497 | } | |
4498 | ||
4499 | megasas_return_cmd(instance, cmd); | |
4500 | return error; | |
4501 | } | |
4502 | ||
c4a3e0a5 BS |
4503 | static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) |
4504 | { | |
4505 | struct megasas_iocpacket __user *user_ioc = | |
4506 | (struct megasas_iocpacket __user *)arg; | |
4507 | struct megasas_iocpacket *ioc; | |
4508 | struct megasas_instance *instance; | |
4509 | int error; | |
39a98554 | 4510 | int i; |
4511 | unsigned long flags; | |
4512 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; | |
c4a3e0a5 BS |
4513 | |
4514 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); | |
4515 | if (!ioc) | |
4516 | return -ENOMEM; | |
4517 | ||
4518 | if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { | |
4519 | error = -EFAULT; | |
4520 | goto out_kfree_ioc; | |
4521 | } | |
4522 | ||
4523 | instance = megasas_lookup_instance(ioc->host_no); | |
4524 | if (!instance) { | |
4525 | error = -ENODEV; | |
4526 | goto out_kfree_ioc; | |
4527 | } | |
4528 | ||
39a98554 | 4529 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
4530 | printk(KERN_ERR "Controller in crit error\n"); | |
0c79e681 YB |
4531 | error = -ENODEV; |
4532 | goto out_kfree_ioc; | |
4533 | } | |
4534 | ||
4535 | if (instance->unload == 1) { | |
4536 | error = -ENODEV; | |
4537 | goto out_kfree_ioc; | |
4538 | } | |
4539 | ||
c4a3e0a5 BS |
4540 | /* |
4541 | * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds | |
4542 | */ | |
4543 | if (down_interruptible(&instance->ioctl_sem)) { | |
4544 | error = -ERESTARTSYS; | |
4545 | goto out_kfree_ioc; | |
4546 | } | |
39a98554 | 4547 | |
4548 | for (i = 0; i < wait_time; i++) { | |
4549 | ||
4550 | spin_lock_irqsave(&instance->hba_lock, flags); | |
4551 | if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { | |
4552 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4553 | break; | |
4554 | } | |
4555 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4556 | ||
4557 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
4558 | printk(KERN_NOTICE "megasas: waiting" | |
4559 | "for controller reset to finish\n"); | |
4560 | } | |
4561 | ||
4562 | msleep(1000); | |
4563 | } | |
4564 | ||
4565 | spin_lock_irqsave(&instance->hba_lock, flags); | |
4566 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
4567 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4568 | ||
4569 | printk(KERN_ERR "megaraid_sas: timed out while" | |
4570 | "waiting for HBA to recover\n"); | |
4571 | error = -ENODEV; | |
4572 | goto out_kfree_ioc; | |
4573 | } | |
4574 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4575 | ||
c4a3e0a5 BS |
4576 | error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); |
4577 | up(&instance->ioctl_sem); | |
4578 | ||
4579 | out_kfree_ioc: | |
4580 | kfree(ioc); | |
4581 | return error; | |
4582 | } | |
4583 | ||
4584 | static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) | |
4585 | { | |
4586 | struct megasas_instance *instance; | |
4587 | struct megasas_aen aen; | |
4588 | int error; | |
39a98554 | 4589 | int i; |
4590 | unsigned long flags; | |
4591 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; | |
c4a3e0a5 BS |
4592 | |
4593 | if (file->private_data != file) { | |
4594 | printk(KERN_DEBUG "megasas: fasync_helper was not " | |
4595 | "called first\n"); | |
4596 | return -EINVAL; | |
4597 | } | |
4598 | ||
4599 | if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) | |
4600 | return -EFAULT; | |
4601 | ||
4602 | instance = megasas_lookup_instance(aen.host_no); | |
4603 | ||
4604 | if (!instance) | |
4605 | return -ENODEV; | |
4606 | ||
39a98554 | 4607 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
4608 | return -ENODEV; | |
0c79e681 YB |
4609 | } |
4610 | ||
4611 | if (instance->unload == 1) { | |
4612 | return -ENODEV; | |
4613 | } | |
4614 | ||
39a98554 | 4615 | for (i = 0; i < wait_time; i++) { |
4616 | ||
4617 | spin_lock_irqsave(&instance->hba_lock, flags); | |
4618 | if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { | |
4619 | spin_unlock_irqrestore(&instance->hba_lock, | |
4620 | flags); | |
4621 | break; | |
4622 | } | |
4623 | ||
4624 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4625 | ||
4626 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
4627 | printk(KERN_NOTICE "megasas: waiting for" | |
4628 | "controller reset to finish\n"); | |
4629 | } | |
4630 | ||
4631 | msleep(1000); | |
4632 | } | |
4633 | ||
4634 | spin_lock_irqsave(&instance->hba_lock, flags); | |
4635 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
4636 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4637 | printk(KERN_ERR "megaraid_sas: timed out while waiting" | |
4638 | "for HBA to recover.\n"); | |
4639 | return -ENODEV; | |
4640 | } | |
4641 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4642 | ||
e5a69e27 | 4643 | mutex_lock(&instance->aen_mutex); |
c4a3e0a5 BS |
4644 | error = megasas_register_aen(instance, aen.seq_num, |
4645 | aen.class_locale_word); | |
e5a69e27 | 4646 | mutex_unlock(&instance->aen_mutex); |
c4a3e0a5 BS |
4647 | return error; |
4648 | } | |
4649 | ||
4650 | /** | |
4651 | * megasas_mgmt_ioctl - char node ioctl entry point | |
4652 | */ | |
4653 | static long | |
4654 | megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
4655 | { | |
4656 | switch (cmd) { | |
4657 | case MEGASAS_IOC_FIRMWARE: | |
4658 | return megasas_mgmt_ioctl_fw(file, arg); | |
4659 | ||
4660 | case MEGASAS_IOC_GET_AEN: | |
4661 | return megasas_mgmt_ioctl_aen(file, arg); | |
4662 | } | |
4663 | ||
4664 | return -ENOTTY; | |
4665 | } | |
4666 | ||
4667 | #ifdef CONFIG_COMPAT | |
4668 | static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) | |
4669 | { | |
4670 | struct compat_megasas_iocpacket __user *cioc = | |
4671 | (struct compat_megasas_iocpacket __user *)arg; | |
4672 | struct megasas_iocpacket __user *ioc = | |
4673 | compat_alloc_user_space(sizeof(struct megasas_iocpacket)); | |
4674 | int i; | |
4675 | int error = 0; | |
b3dc1a21 | 4676 | compat_uptr_t ptr; |
c4a3e0a5 | 4677 | |
83aabc1b JG |
4678 | if (clear_user(ioc, sizeof(*ioc))) |
4679 | return -EFAULT; | |
c4a3e0a5 BS |
4680 | |
4681 | if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || | |
4682 | copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || | |
4683 | copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || | |
4684 | copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || | |
4685 | copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || | |
4686 | copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) | |
4687 | return -EFAULT; | |
4688 | ||
b3dc1a21 TH |
4689 | /* |
4690 | * The sense_ptr is used in megasas_mgmt_fw_ioctl only when | |
4691 | * sense_len is not null, so prepare the 64bit value under | |
4692 | * the same condition. | |
4693 | */ | |
4694 | if (ioc->sense_len) { | |
4695 | void __user **sense_ioc_ptr = | |
4696 | (void __user **)(ioc->frame.raw + ioc->sense_off); | |
4697 | compat_uptr_t *sense_cioc_ptr = | |
4698 | (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); | |
4699 | if (get_user(ptr, sense_cioc_ptr) || | |
4700 | put_user(compat_ptr(ptr), sense_ioc_ptr)) | |
4701 | return -EFAULT; | |
4702 | } | |
c4a3e0a5 | 4703 | |
b3dc1a21 | 4704 | for (i = 0; i < MAX_IOCTL_SGE; i++) { |
c4a3e0a5 BS |
4705 | if (get_user(ptr, &cioc->sgl[i].iov_base) || |
4706 | put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || | |
4707 | copy_in_user(&ioc->sgl[i].iov_len, | |
4708 | &cioc->sgl[i].iov_len, sizeof(compat_size_t))) | |
4709 | return -EFAULT; | |
4710 | } | |
4711 | ||
4712 | error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); | |
4713 | ||
4714 | if (copy_in_user(&cioc->frame.hdr.cmd_status, | |
4715 | &ioc->frame.hdr.cmd_status, sizeof(u8))) { | |
4716 | printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); | |
4717 | return -EFAULT; | |
4718 | } | |
4719 | return error; | |
4720 | } | |
4721 | ||
4722 | static long | |
4723 | megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, | |
4724 | unsigned long arg) | |
4725 | { | |
4726 | switch (cmd) { | |
cb59aa6a SP |
4727 | case MEGASAS_IOC_FIRMWARE32: |
4728 | return megasas_mgmt_compat_ioctl_fw(file, arg); | |
c4a3e0a5 BS |
4729 | case MEGASAS_IOC_GET_AEN: |
4730 | return megasas_mgmt_ioctl_aen(file, arg); | |
4731 | } | |
4732 | ||
4733 | return -ENOTTY; | |
4734 | } | |
4735 | #endif | |
4736 | ||
4737 | /* | |
4738 | * File operations structure for management interface | |
4739 | */ | |
00977a59 | 4740 | static const struct file_operations megasas_mgmt_fops = { |
c4a3e0a5 BS |
4741 | .owner = THIS_MODULE, |
4742 | .open = megasas_mgmt_open, | |
c4a3e0a5 BS |
4743 | .fasync = megasas_mgmt_fasync, |
4744 | .unlocked_ioctl = megasas_mgmt_ioctl, | |
c3518837 | 4745 | .poll = megasas_mgmt_poll, |
c4a3e0a5 BS |
4746 | #ifdef CONFIG_COMPAT |
4747 | .compat_ioctl = megasas_mgmt_compat_ioctl, | |
4748 | #endif | |
6038f373 | 4749 | .llseek = noop_llseek, |
c4a3e0a5 BS |
4750 | }; |
4751 | ||
4752 | /* | |
4753 | * PCI hotplug support registration structure | |
4754 | */ | |
4755 | static struct pci_driver megasas_pci_driver = { | |
4756 | ||
4757 | .name = "megaraid_sas", | |
4758 | .id_table = megasas_pci_table, | |
4759 | .probe = megasas_probe_one, | |
4760 | .remove = __devexit_p(megasas_detach_one), | |
31ea7088 | 4761 | .suspend = megasas_suspend, |
4762 | .resume = megasas_resume, | |
c4a3e0a5 BS |
4763 | .shutdown = megasas_shutdown, |
4764 | }; | |
4765 | ||
4766 | /* | |
4767 | * Sysfs driver attributes | |
4768 | */ | |
4769 | static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) | |
4770 | { | |
4771 | return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", | |
4772 | MEGASAS_VERSION); | |
4773 | } | |
4774 | ||
4775 | static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); | |
4776 | ||
4777 | static ssize_t | |
4778 | megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) | |
4779 | { | |
4780 | return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", | |
4781 | MEGASAS_RELDATE); | |
4782 | } | |
4783 | ||
4784 | static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, | |
4785 | NULL); | |
4786 | ||
72c4fd36 YB |
4787 | static ssize_t |
4788 | megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) | |
4789 | { | |
4790 | return sprintf(buf, "%u\n", support_poll_for_event); | |
4791 | } | |
4792 | ||
4793 | static DRIVER_ATTR(support_poll_for_event, S_IRUGO, | |
4794 | megasas_sysfs_show_support_poll_for_event, NULL); | |
4795 | ||
837f5fe8 YB |
4796 | static ssize_t |
4797 | megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) | |
4798 | { | |
4799 | return sprintf(buf, "%u\n", support_device_change); | |
4800 | } | |
4801 | ||
4802 | static DRIVER_ATTR(support_device_change, S_IRUGO, | |
4803 | megasas_sysfs_show_support_device_change, NULL); | |
4804 | ||
658dcedb SP |
4805 | static ssize_t |
4806 | megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) | |
4807 | { | |
ad84db2e | 4808 | return sprintf(buf, "%u\n", megasas_dbg_lvl); |
658dcedb SP |
4809 | } |
4810 | ||
4811 | static ssize_t | |
4812 | megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) | |
4813 | { | |
4814 | int retval = count; | |
4815 | if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ | |
4816 | printk(KERN_ERR "megasas: could not set dbg_lvl\n"); | |
4817 | retval = -EINVAL; | |
4818 | } | |
4819 | return retval; | |
4820 | } | |
4821 | ||
66dca9b8 | 4822 | static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, |
ad84db2e | 4823 | megasas_sysfs_set_dbg_lvl); |
4824 | ||
4825 | static ssize_t | |
4826 | megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf) | |
4827 | { | |
4828 | return sprintf(buf, "%u\n", poll_mode_io); | |
4829 | } | |
4830 | ||
4831 | static ssize_t | |
4832 | megasas_sysfs_set_poll_mode_io(struct device_driver *dd, | |
4833 | const char *buf, size_t count) | |
4834 | { | |
4835 | int retval = count; | |
4836 | int tmp = poll_mode_io; | |
4837 | int i; | |
4838 | struct megasas_instance *instance; | |
4839 | ||
4840 | if (sscanf(buf, "%u", &poll_mode_io) < 1) { | |
4841 | printk(KERN_ERR "megasas: could not set poll_mode_io\n"); | |
4842 | retval = -EINVAL; | |
4843 | } | |
4844 | ||
4845 | /* | |
4846 | * Check if poll_mode_io is already set or is same as previous value | |
4847 | */ | |
4848 | if ((tmp && poll_mode_io) || (tmp == poll_mode_io)) | |
4849 | goto out; | |
4850 | ||
4851 | if (poll_mode_io) { | |
4852 | /* | |
4853 | * Start timers for all adapters | |
4854 | */ | |
4855 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
4856 | instance = megasas_mgmt_info.instance[i]; | |
4857 | if (instance) { | |
4858 | megasas_start_timer(instance, | |
4859 | &instance->io_completion_timer, | |
4860 | megasas_io_completion_timer, | |
4861 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
4862 | } | |
4863 | } | |
4864 | } else { | |
4865 | /* | |
4866 | * Delete timers for all adapters | |
4867 | */ | |
4868 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
4869 | instance = megasas_mgmt_info.instance[i]; | |
4870 | if (instance) | |
4871 | del_timer_sync(&instance->io_completion_timer); | |
4872 | } | |
4873 | } | |
4874 | ||
4875 | out: | |
4876 | return retval; | |
4877 | } | |
4878 | ||
7e8a75f4 YB |
4879 | static void |
4880 | megasas_aen_polling(struct work_struct *work) | |
4881 | { | |
4882 | struct megasas_aen_event *ev = | |
4883 | container_of(work, struct megasas_aen_event, hotplug_work); | |
4884 | struct megasas_instance *instance = ev->instance; | |
4885 | union megasas_evt_class_locale class_locale; | |
4886 | struct Scsi_Host *host; | |
4887 | struct scsi_device *sdev1; | |
4888 | u16 pd_index = 0; | |
c9786842 | 4889 | u16 ld_index = 0; |
7e8a75f4 YB |
4890 | int i, j, doscan = 0; |
4891 | u32 seq_num; | |
4892 | int error; | |
4893 | ||
4894 | if (!instance) { | |
4895 | printk(KERN_ERR "invalid instance!\n"); | |
4896 | kfree(ev); | |
4897 | return; | |
4898 | } | |
4899 | instance->ev = NULL; | |
4900 | host = instance->host; | |
4901 | if (instance->evt_detail) { | |
4902 | ||
4903 | switch (instance->evt_detail->code) { | |
4904 | case MR_EVT_PD_INSERTED: | |
c9786842 YB |
4905 | if (megasas_get_pd_list(instance) == 0) { |
4906 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
4907 | for (j = 0; | |
4908 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4909 | j++) { | |
4910 | ||
4911 | pd_index = | |
4912 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4913 | ||
4914 | sdev1 = | |
4915 | scsi_device_lookup(host, i, j, 0); | |
4916 | ||
4917 | if (instance->pd_list[pd_index].driveState | |
4918 | == MR_PD_STATE_SYSTEM) { | |
4919 | if (!sdev1) { | |
4920 | scsi_add_device(host, i, j, 0); | |
4921 | } | |
4922 | ||
4923 | if (sdev1) | |
4924 | scsi_device_put(sdev1); | |
4925 | } | |
4926 | } | |
4927 | } | |
4928 | } | |
4929 | doscan = 0; | |
4930 | break; | |
4931 | ||
7e8a75f4 | 4932 | case MR_EVT_PD_REMOVED: |
c9786842 YB |
4933 | if (megasas_get_pd_list(instance) == 0) { |
4934 | megasas_get_pd_list(instance); | |
4935 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
4936 | for (j = 0; | |
4937 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4938 | j++) { | |
4939 | ||
4940 | pd_index = | |
4941 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4942 | ||
4943 | sdev1 = | |
4944 | scsi_device_lookup(host, i, j, 0); | |
4945 | ||
4946 | if (instance->pd_list[pd_index].driveState | |
4947 | == MR_PD_STATE_SYSTEM) { | |
4948 | if (sdev1) { | |
4949 | scsi_device_put(sdev1); | |
4950 | } | |
4951 | } else { | |
4952 | if (sdev1) { | |
4953 | scsi_remove_device(sdev1); | |
4954 | scsi_device_put(sdev1); | |
4955 | } | |
4956 | } | |
4957 | } | |
4958 | } | |
4959 | } | |
4960 | doscan = 0; | |
4961 | break; | |
4962 | ||
4963 | case MR_EVT_LD_OFFLINE: | |
4964 | case MR_EVT_LD_DELETED: | |
4965 | megasas_get_ld_list(instance); | |
4966 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
4967 | for (j = 0; | |
4968 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4969 | j++) { | |
4970 | ||
4971 | ld_index = | |
4972 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4973 | ||
4974 | sdev1 = scsi_device_lookup(host, | |
4975 | i + MEGASAS_MAX_LD_CHANNELS, | |
4976 | j, | |
4977 | 0); | |
4978 | ||
4979 | if (instance->ld_ids[ld_index] != 0xff) { | |
4980 | if (sdev1) { | |
4981 | scsi_device_put(sdev1); | |
4982 | } | |
4983 | } else { | |
4984 | if (sdev1) { | |
4985 | scsi_remove_device(sdev1); | |
4986 | scsi_device_put(sdev1); | |
4987 | } | |
4988 | } | |
4989 | } | |
4990 | } | |
4991 | doscan = 0; | |
4992 | break; | |
4993 | case MR_EVT_LD_CREATED: | |
4994 | megasas_get_ld_list(instance); | |
4995 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
4996 | for (j = 0; | |
4997 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4998 | j++) { | |
4999 | ld_index = | |
5000 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5001 | ||
5002 | sdev1 = scsi_device_lookup(host, | |
5003 | i+MEGASAS_MAX_LD_CHANNELS, | |
5004 | j, 0); | |
5005 | ||
5006 | if (instance->ld_ids[ld_index] != | |
5007 | 0xff) { | |
5008 | if (!sdev1) { | |
5009 | scsi_add_device(host, | |
5010 | i + 2, | |
5011 | j, 0); | |
5012 | } | |
5013 | } | |
5014 | if (sdev1) { | |
5015 | scsi_device_put(sdev1); | |
5016 | } | |
5017 | } | |
5018 | } | |
5019 | doscan = 0; | |
5020 | break; | |
7e8a75f4 | 5021 | case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: |
c9786842 | 5022 | case MR_EVT_FOREIGN_CFG_IMPORTED: |
7e8a75f4 YB |
5023 | doscan = 1; |
5024 | break; | |
5025 | default: | |
5026 | doscan = 0; | |
5027 | break; | |
5028 | } | |
5029 | } else { | |
5030 | printk(KERN_ERR "invalid evt_detail!\n"); | |
5031 | kfree(ev); | |
5032 | return; | |
5033 | } | |
5034 | ||
5035 | if (doscan) { | |
5036 | printk(KERN_INFO "scanning ...\n"); | |
5037 | megasas_get_pd_list(instance); | |
5038 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
5039 | for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { | |
5040 | pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; | |
5041 | sdev1 = scsi_device_lookup(host, i, j, 0); | |
5042 | if (instance->pd_list[pd_index].driveState == | |
5043 | MR_PD_STATE_SYSTEM) { | |
5044 | if (!sdev1) { | |
5045 | scsi_add_device(host, i, j, 0); | |
5046 | } | |
5047 | if (sdev1) | |
5048 | scsi_device_put(sdev1); | |
5049 | } else { | |
5050 | if (sdev1) { | |
5051 | scsi_remove_device(sdev1); | |
5052 | scsi_device_put(sdev1); | |
5053 | } | |
5054 | } | |
5055 | } | |
5056 | } | |
c9786842 YB |
5057 | |
5058 | megasas_get_ld_list(instance); | |
5059 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
5060 | for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { | |
5061 | ld_index = | |
5062 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5063 | ||
5064 | sdev1 = scsi_device_lookup(host, | |
5065 | i+MEGASAS_MAX_LD_CHANNELS, j, 0); | |
5066 | if (instance->ld_ids[ld_index] != 0xff) { | |
5067 | if (!sdev1) { | |
5068 | scsi_add_device(host, | |
5069 | i+2, | |
5070 | j, 0); | |
5071 | } else { | |
5072 | scsi_device_put(sdev1); | |
5073 | } | |
5074 | } else { | |
5075 | if (sdev1) { | |
5076 | scsi_remove_device(sdev1); | |
5077 | scsi_device_put(sdev1); | |
5078 | } | |
5079 | } | |
5080 | } | |
5081 | } | |
7e8a75f4 YB |
5082 | } |
5083 | ||
5084 | if ( instance->aen_cmd != NULL ) { | |
5085 | kfree(ev); | |
5086 | return ; | |
5087 | } | |
5088 | ||
5089 | seq_num = instance->evt_detail->seq_num + 1; | |
5090 | ||
5091 | /* Register AEN with FW for latest sequence number plus 1 */ | |
5092 | class_locale.members.reserved = 0; | |
5093 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
5094 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
5095 | mutex_lock(&instance->aen_mutex); | |
5096 | error = megasas_register_aen(instance, seq_num, | |
5097 | class_locale.word); | |
5098 | mutex_unlock(&instance->aen_mutex); | |
5099 | ||
5100 | if (error) | |
5101 | printk(KERN_ERR "register aen failed error %x\n", error); | |
5102 | ||
5103 | kfree(ev); | |
5104 | } | |
5105 | ||
5106 | ||
bb7d3f24 | 5107 | static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR, |
ad84db2e | 5108 | megasas_sysfs_show_poll_mode_io, |
5109 | megasas_sysfs_set_poll_mode_io); | |
658dcedb | 5110 | |
c4a3e0a5 BS |
5111 | /** |
5112 | * megasas_init - Driver load entry point | |
5113 | */ | |
5114 | static int __init megasas_init(void) | |
5115 | { | |
5116 | int rval; | |
5117 | ||
5118 | /* | |
5119 | * Announce driver version and other information | |
5120 | */ | |
5121 | printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, | |
5122 | MEGASAS_EXT_VERSION); | |
5123 | ||
72c4fd36 | 5124 | support_poll_for_event = 2; |
837f5fe8 | 5125 | support_device_change = 1; |
72c4fd36 | 5126 | |
c4a3e0a5 BS |
5127 | memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); |
5128 | ||
5129 | /* | |
5130 | * Register character device node | |
5131 | */ | |
5132 | rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); | |
5133 | ||
5134 | if (rval < 0) { | |
5135 | printk(KERN_DEBUG "megasas: failed to open device node\n"); | |
5136 | return rval; | |
5137 | } | |
5138 | ||
5139 | megasas_mgmt_majorno = rval; | |
5140 | ||
5141 | /* | |
5142 | * Register ourselves as PCI hotplug module | |
5143 | */ | |
4041b9cd | 5144 | rval = pci_register_driver(&megasas_pci_driver); |
c4a3e0a5 BS |
5145 | |
5146 | if (rval) { | |
5147 | printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); | |
83aabc1b JG |
5148 | goto err_pcidrv; |
5149 | } | |
5150 | ||
5151 | rval = driver_create_file(&megasas_pci_driver.driver, | |
5152 | &driver_attr_version); | |
5153 | if (rval) | |
5154 | goto err_dcf_attr_ver; | |
5155 | rval = driver_create_file(&megasas_pci_driver.driver, | |
5156 | &driver_attr_release_date); | |
5157 | if (rval) | |
5158 | goto err_dcf_rel_date; | |
72c4fd36 YB |
5159 | |
5160 | rval = driver_create_file(&megasas_pci_driver.driver, | |
5161 | &driver_attr_support_poll_for_event); | |
5162 | if (rval) | |
5163 | goto err_dcf_support_poll_for_event; | |
5164 | ||
83aabc1b JG |
5165 | rval = driver_create_file(&megasas_pci_driver.driver, |
5166 | &driver_attr_dbg_lvl); | |
5167 | if (rval) | |
5168 | goto err_dcf_dbg_lvl; | |
ad84db2e | 5169 | rval = driver_create_file(&megasas_pci_driver.driver, |
5170 | &driver_attr_poll_mode_io); | |
5171 | if (rval) | |
5172 | goto err_dcf_poll_mode_io; | |
c4a3e0a5 | 5173 | |
837f5fe8 YB |
5174 | rval = driver_create_file(&megasas_pci_driver.driver, |
5175 | &driver_attr_support_device_change); | |
5176 | if (rval) | |
5177 | goto err_dcf_support_device_change; | |
5178 | ||
c4a3e0a5 | 5179 | return rval; |
ad84db2e | 5180 | |
837f5fe8 YB |
5181 | err_dcf_support_device_change: |
5182 | driver_remove_file(&megasas_pci_driver.driver, | |
5183 | &driver_attr_poll_mode_io); | |
5184 | ||
ad84db2e | 5185 | err_dcf_poll_mode_io: |
5186 | driver_remove_file(&megasas_pci_driver.driver, | |
5187 | &driver_attr_dbg_lvl); | |
83aabc1b | 5188 | err_dcf_dbg_lvl: |
72c4fd36 YB |
5189 | driver_remove_file(&megasas_pci_driver.driver, |
5190 | &driver_attr_support_poll_for_event); | |
5191 | ||
5192 | err_dcf_support_poll_for_event: | |
83aabc1b JG |
5193 | driver_remove_file(&megasas_pci_driver.driver, |
5194 | &driver_attr_release_date); | |
72c4fd36 | 5195 | |
83aabc1b JG |
5196 | err_dcf_rel_date: |
5197 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); | |
5198 | err_dcf_attr_ver: | |
5199 | pci_unregister_driver(&megasas_pci_driver); | |
5200 | err_pcidrv: | |
5201 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); | |
0d49016b | 5202 | return rval; |
c4a3e0a5 BS |
5203 | } |
5204 | ||
5205 | /** | |
5206 | * megasas_exit - Driver unload entry point | |
5207 | */ | |
5208 | static void __exit megasas_exit(void) | |
5209 | { | |
ad84db2e | 5210 | driver_remove_file(&megasas_pci_driver.driver, |
5211 | &driver_attr_poll_mode_io); | |
658dcedb SP |
5212 | driver_remove_file(&megasas_pci_driver.driver, |
5213 | &driver_attr_dbg_lvl); | |
837f5fe8 YB |
5214 | driver_remove_file(&megasas_pci_driver.driver, |
5215 | &driver_attr_support_poll_for_event); | |
5216 | driver_remove_file(&megasas_pci_driver.driver, | |
5217 | &driver_attr_support_device_change); | |
83aabc1b JG |
5218 | driver_remove_file(&megasas_pci_driver.driver, |
5219 | &driver_attr_release_date); | |
5220 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); | |
c4a3e0a5 BS |
5221 | |
5222 | pci_unregister_driver(&megasas_pci_driver); | |
5223 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); | |
5224 | } | |
5225 | ||
5226 | module_init(megasas_init); | |
5227 | module_exit(megasas_exit); |